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Qichuan Jiang - One of the best experts on this subject based on the ideXlab platform.

  • the mechanism of thermal explosion te synthesis of tic tib2 particulate locally Reinforced Steel matrix composites from an al ti b4c system via a te casting route
    Materials Chemistry and Physics, 2012
    Co-Authors: Ping Shen, Qichuan Jiang
    Abstract:

    TiC-TiB2 particulate locally Reinforced Steel matrix composites were fabricated by a novel TE-casting route from an Al-Ti-B4C system with various B4C particle sizes. The formation mechanism of TiC and TiB2 in the locally Reinforced regions was investigated. The results showed that TiC and TiB2 are formed and precipitated from Al-Ti-B-C melt resulting from the dissociation of B4C into Al-Ti melt when the concentrations of B and C atoms in the Al-Ti-B-C melt become saturated. However, in the case of coarse B4C powders (>= 40 mu m) used, the primary reaction in the Al-Ti-B-C melt is quite limited due to the poor dissociation of B4C. The poured Steel melt infiltrates into the primary reaction product and thus leads to the formation of Al-Fe-Ti-B-C melt, thanks to the favorable reaction of molten Fe with remnant B4C, and then TiC and TiB2 are further formed and precipitated from the saturated Al-Fe-Ti-B-C melt. The relationship between the mechanisms of thermal explosion (TE) synthesis of TiC and TiB2 in the electric resistance furnace and during casting was proposed. (C) 2011 Elsevier B.V. All rights reserved.

  • the mechanism of thermal explosion te synthesis of tic tib2 particulate locally Reinforced Steel matrix composites from an al ti b4c system via a te casting route
    Materials Chemistry and Physics, 2012
    Co-Authors: Ping Shen, Binglin Zou, Xueqiang Cao, Qichuan Jiang
    Abstract:

    TiC-TiB2 particulate locally Reinforced Steel matrix composites were fabricated by a novel TE-casting route from an Al-Ti-B4C system with various B4C particle sizes. The formation mechanism of TiC and TiB2 in the locally Reinforced regions was investigated. The results showed that TiC and TiB2 are formed and precipitated from Al-Ti-B-C melt resulting from the dissociation of B4C into Al-Ti melt when the concentrations of B and C atoms in the Al-Ti-B-C melt become saturated. However, in the case of coarse B4C powders (>= 40 mu m) used, the primary reaction in the Al-Ti-B-C melt is quite limited due to the poor dissociation of B4C. The poured Steel melt infiltrates into the primary reaction product and thus leads to the formation of Al-Fe-Ti-B-C melt, thanks to the favorable reaction of molten Fe with remnant B4C, and then TiC and TiB2 are further formed and precipitated from the saturated Al-Fe-Ti-B-C melt. The relationship between the mechanisms of thermal explosion (TE) synthesis of TiC and TiB2 in the electric resistance furnace and during casting was proposed. (C) 2011 Elsevier B.V. All rights reserved.

Binglin Zou - One of the best experts on this subject based on the ideXlab platform.

  • the mechanism of thermal explosion te synthesis of tic tib2 particulate locally Reinforced Steel matrix composites from an al ti b4c system via a te casting route
    Materials Chemistry and Physics, 2012
    Co-Authors: Ping Shen, Binglin Zou, Xueqiang Cao, Qichuan Jiang
    Abstract:

    TiC-TiB2 particulate locally Reinforced Steel matrix composites were fabricated by a novel TE-casting route from an Al-Ti-B4C system with various B4C particle sizes. The formation mechanism of TiC and TiB2 in the locally Reinforced regions was investigated. The results showed that TiC and TiB2 are formed and precipitated from Al-Ti-B-C melt resulting from the dissociation of B4C into Al-Ti melt when the concentrations of B and C atoms in the Al-Ti-B-C melt become saturated. However, in the case of coarse B4C powders (>= 40 mu m) used, the primary reaction in the Al-Ti-B-C melt is quite limited due to the poor dissociation of B4C. The poured Steel melt infiltrates into the primary reaction product and thus leads to the formation of Al-Fe-Ti-B-C melt, thanks to the favorable reaction of molten Fe with remnant B4C, and then TiC and TiB2 are further formed and precipitated from the saturated Al-Fe-Ti-B-C melt. The relationship between the mechanisms of thermal explosion (TE) synthesis of TiC and TiB2 in the electric resistance furnace and during casting was proposed. (C) 2011 Elsevier B.V. All rights reserved.

Ping Shen - One of the best experts on this subject based on the ideXlab platform.

  • the mechanism of thermal explosion te synthesis of tic tib2 particulate locally Reinforced Steel matrix composites from an al ti b4c system via a te casting route
    Materials Chemistry and Physics, 2012
    Co-Authors: Ping Shen, Qichuan Jiang
    Abstract:

    TiC-TiB2 particulate locally Reinforced Steel matrix composites were fabricated by a novel TE-casting route from an Al-Ti-B4C system with various B4C particle sizes. The formation mechanism of TiC and TiB2 in the locally Reinforced regions was investigated. The results showed that TiC and TiB2 are formed and precipitated from Al-Ti-B-C melt resulting from the dissociation of B4C into Al-Ti melt when the concentrations of B and C atoms in the Al-Ti-B-C melt become saturated. However, in the case of coarse B4C powders (>= 40 mu m) used, the primary reaction in the Al-Ti-B-C melt is quite limited due to the poor dissociation of B4C. The poured Steel melt infiltrates into the primary reaction product and thus leads to the formation of Al-Fe-Ti-B-C melt, thanks to the favorable reaction of molten Fe with remnant B4C, and then TiC and TiB2 are further formed and precipitated from the saturated Al-Fe-Ti-B-C melt. The relationship between the mechanisms of thermal explosion (TE) synthesis of TiC and TiB2 in the electric resistance furnace and during casting was proposed. (C) 2011 Elsevier B.V. All rights reserved.

  • the mechanism of thermal explosion te synthesis of tic tib2 particulate locally Reinforced Steel matrix composites from an al ti b4c system via a te casting route
    Materials Chemistry and Physics, 2012
    Co-Authors: Ping Shen, Binglin Zou, Xueqiang Cao, Qichuan Jiang
    Abstract:

    TiC-TiB2 particulate locally Reinforced Steel matrix composites were fabricated by a novel TE-casting route from an Al-Ti-B4C system with various B4C particle sizes. The formation mechanism of TiC and TiB2 in the locally Reinforced regions was investigated. The results showed that TiC and TiB2 are formed and precipitated from Al-Ti-B-C melt resulting from the dissociation of B4C into Al-Ti melt when the concentrations of B and C atoms in the Al-Ti-B-C melt become saturated. However, in the case of coarse B4C powders (>= 40 mu m) used, the primary reaction in the Al-Ti-B-C melt is quite limited due to the poor dissociation of B4C. The poured Steel melt infiltrates into the primary reaction product and thus leads to the formation of Al-Fe-Ti-B-C melt, thanks to the favorable reaction of molten Fe with remnant B4C, and then TiC and TiB2 are further formed and precipitated from the saturated Al-Fe-Ti-B-C melt. The relationship between the mechanisms of thermal explosion (TE) synthesis of TiC and TiB2 in the electric resistance furnace and during casting was proposed. (C) 2011 Elsevier B.V. All rights reserved.

Tian Zhiling - One of the best experts on this subject based on the ideXlab platform.

  • microstructure in the haz of ultra fine grain Reinforced Steel with flash butt welding
    Materials for Mechanical Engineering, 2004
    Co-Authors: Tian Zhiling
    Abstract:

    HAZ's microstructure feature and micro-hardness of 400MPa ultra-fine Steel of flash butt welding were investigated by using metallographical examination and test of mechanical properties. Simulated grain growth in HAZ was studied using Monte Carlo method The test results showed that microstructure had an obvious change with distance variety from fusion grain area to parent metal. Flash butt welding joint of Reinforced Steel bar only resulted in local soften region inside the welded seam but little effect on bulk performance. The simulation results show that this method can predict distribution of grains and effect of steep temperature gradients in HAZ. Comparison of simulated grain size and actual grain size has good consistency.

  • Study on the flash butt welding of 400 MPa ultra-fine grain Steel
    Journal of Materials Engineering and Performance, 2003
    Co-Authors: Wang Weibin, Shi Yaowu, Sha Peng, Lei Yongping, Tian Zhiling
    Abstract:

    A 400 MPa ultra-fine grain Steel possesses high strength and toughness. Due to its fine grain size, the heat affect zone (HAZ) of the weld joint will soften during welding. The weldability of 400 MPa ultra-fine Reinforced Steel bar of flash butt welding is investigated by using the micro metallographical examination and macro-mechanical-property tests. The joint of flash butt welding has a superior mechanical property. The HAZ in the weld joint does not show apparent softening. There is only a localized softening spot inside the weld seam, which does not affect the property of the whole joint. Therefore, flash butt welding is appropriate for joining the 400 MPa ultra-fine grain Reinforced Steel bars. The resulting weld joint has excellent mechanical properties.

A. K. Chakrabarti - One of the best experts on this subject based on the ideXlab platform.

  • Preparation of TiC Reinforced Steel composites and their characterisation
    Materials Science and Technology, 1999
    Co-Authors: R. K. Galgali, H. S. Ray, A. K. Chakrabarti
    Abstract:

    AbstractCarbide Reinforced Steel composites are useful in extensive wear resistance applications. Titanium carbide Reinforced Steel composites have been prepared by dissolving a TiC rich Fe–TiC master alloy in a liquid Steel. The composites have been characterised by optical microscopy, energy dispersive X-ray scanning electron microscope analysis, image analysis, and X-ray diffraction studies. Tensile strength measurements showed that the ultimate tensile strengths varied between 790 and 880 MPa for composites containing 0·7–0·34 wt-%Ti. Some composites show better wear resistance properties in comparison with low alloy Steels.