The Experts below are selected from a list of 1728 Experts worldwide ranked by ideXlab platform

Shu Guo - One of the best experts on this subject based on the ideXlab platform.

  • nano indentation investigation on the local softening of Equiaxed Zone in 2060 t8 2099 t83 aluminum lithium alloys t joints welded by double sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Bing Han, Yanbin Chen, Wang Tao, Zhenglong Lei, Shu Guo
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.

  • Nano-indentation investigation on the local softening of Equiaxed Zone in 2060-T8/2099-T83 aluminum-lithium alloys T-joints welded by double-sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Han Bing, Yanbin Chen, Wang Tao, Zhenglong Lei, Li Hao, Shu Guo, Li Peng
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.

Bing Han - One of the best experts on this subject based on the ideXlab platform.

  • nano indentation investigation on the local softening of Equiaxed Zone in 2060 t8 2099 t83 aluminum lithium alloys t joints welded by double sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Bing Han, Yanbin Chen, Wang Tao, Zhenglong Lei, Shu Guo
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.

Yanbin Chen - One of the best experts on this subject based on the ideXlab platform.

  • nano indentation investigation on the local softening of Equiaxed Zone in 2060 t8 2099 t83 aluminum lithium alloys t joints welded by double sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Bing Han, Yanbin Chen, Wang Tao, Zhenglong Lei, Shu Guo
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.

  • Nano-indentation investigation on the local softening of Equiaxed Zone in 2060-T8/2099-T83 aluminum-lithium alloys T-joints welded by double-sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Han Bing, Yanbin Chen, Wang Tao, Zhenglong Lei, Li Hao, Shu Guo, Li Peng
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.

Wang Tao - One of the best experts on this subject based on the ideXlab platform.

  • nano indentation investigation on the local softening of Equiaxed Zone in 2060 t8 2099 t83 aluminum lithium alloys t joints welded by double sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Bing Han, Yanbin Chen, Wang Tao, Zhenglong Lei, Shu Guo
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.

  • Nano-indentation investigation on the local softening of Equiaxed Zone in 2060-T8/2099-T83 aluminum-lithium alloys T-joints welded by double-sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Han Bing, Yanbin Chen, Wang Tao, Zhenglong Lei, Li Hao, Shu Guo, Li Peng
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.

Zhenglong Lei - One of the best experts on this subject based on the ideXlab platform.

  • nano indentation investigation on the local softening of Equiaxed Zone in 2060 t8 2099 t83 aluminum lithium alloys t joints welded by double sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Bing Han, Yanbin Chen, Wang Tao, Zhenglong Lei, Shu Guo
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.

  • Nano-indentation investigation on the local softening of Equiaxed Zone in 2060-T8/2099-T83 aluminum-lithium alloys T-joints welded by double-sided laser beam welding
    Journal of Alloys and Compounds, 2018
    Co-Authors: Han Bing, Yanbin Chen, Wang Tao, Zhenglong Lei, Li Hao, Shu Guo, Li Peng
    Abstract:

    Abstract Double-sided laser beam welding of 2-mm-thick 2060-T8 and 2099-T83 aluminum-lithium alloys T-joint was performed with AlSi12 wire. Microstructure and nano-indentation hardness characteristics were studied especially in nondendritic Equiaxed Zone (EQZ). In comparison with the precipitates of LiAlSi, Mg2Si and Al2Cu in weld Zone except for the EQZ, an AlCuFeMn icosahedral quasicrystal was detected in the EQZ and Al3Zr particle could be the heteromorphic core of this quasicrystal phase. Local softening problem was confirmed in the EQZ's localized enrichment regions by nano-indentation tests. The cross sections of different indents in and out of the EQZ's local softening area prepared by focused ion beam (FIB) were examined by using transmission electron microscopy (TEM). For the first time, it was directly observed that an intergranular tiny hot crack was formed right underneath the indent tip in the EQZ's local softening area, and mainly thin Al2Cu precipitates were generated and sparsely distributed in Equiaxed grains and their boundaries. However, thick and continuous Al2Cu intergranular precipitates with no microcrack defect were observed below the indent in the other area in the EQZ without softening. Obviously, local softening in the EQZ was most likely to be induced by a combined action of the formation of microcrack and the absence of abundant Al2Cu precipitates in Equiaxed grain boundaries. Since the quantity and size of Al3Zr particle were both much smaller than those of Al2Cu, it had more limited impact on the EQZ's local softening than Al2Cu particle in Equiaxed grain.