The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
He Fang - One of the best experts on this subject based on the ideXlab platform.
-
Superplastic Forming and diffusion bonding of ti 22al 24nb alloy
Journal of Materials Processing Technology, 2015Co-Authors: Changwen Wang, Guofeng Wang, Tao Zhao, He FangAbstract:Abstract In order to analyze Superplasticity and diffusion bonding of Ti–22Al–24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and Superplastic Forming were carried out based on Ti–22Al–24Nb alloy. The results show that Ti–22Al–24Nb has the best Superplasticity under temperature of 960 °C and strain rate of 0.0005 s−1; by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 °C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after Superplastic Forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature.
-
Superplastic Forming and diffusion bonding of Ti–22Al–24Nb alloy
Journal of Materials Processing Technology, 2015Co-Authors: Changwen Wang, Guofeng Wang, Tao Zhao, He FangAbstract:Abstract In order to analyze Superplasticity and diffusion bonding of Ti–22Al–24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and Superplastic Forming were carried out based on Ti–22Al–24Nb alloy. The results show that Ti–22Al–24Nb has the best Superplasticity under temperature of 960 °C and strain rate of 0.0005 s−1; by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 °C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after Superplastic Forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature.
Changwen Wang - One of the best experts on this subject based on the ideXlab platform.
-
Superplastic Forming and diffusion bonding of ti 22al 24nb alloy
Journal of Materials Processing Technology, 2015Co-Authors: Changwen Wang, Guofeng Wang, Tao Zhao, He FangAbstract:Abstract In order to analyze Superplasticity and diffusion bonding of Ti–22Al–24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and Superplastic Forming were carried out based on Ti–22Al–24Nb alloy. The results show that Ti–22Al–24Nb has the best Superplasticity under temperature of 960 °C and strain rate of 0.0005 s−1; by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 °C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after Superplastic Forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature.
-
Superplastic Forming and diffusion bonding of Ti–22Al–24Nb alloy
Journal of Materials Processing Technology, 2015Co-Authors: Changwen Wang, Guofeng Wang, Tao Zhao, He FangAbstract:Abstract In order to analyze Superplasticity and diffusion bonding of Ti–22Al–24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and Superplastic Forming were carried out based on Ti–22Al–24Nb alloy. The results show that Ti–22Al–24Nb has the best Superplasticity under temperature of 960 °C and strain rate of 0.0005 s−1; by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 °C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after Superplastic Forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature.
Guofeng Wang - One of the best experts on this subject based on the ideXlab platform.
-
Current Assisted Superplastic Forming of Titanium Alloy Bellows
Materials Science Forum, 2016Co-Authors: Guofeng Wang, Tao Zhao, Mo Yang, Xiang Yu ZhaoAbstract:Titanium alloy bellows has advantages of light weight, excellent mechanical property, good heat resistance and corrosion resistance, etc. But the cold formability of titanium alloy is poor, so it is difficult to manufacture titanium alloy bellows by traditional mechanical Forming and hydroForming. In this paper, current assisted Superplastic Forming technology was used to process titanium alloy bellows, which could overcome some shortcomings of traditional Superplastic Forming effectively, such as slow heating rate, high energy loss and low production efficiency. And titanium alloy bellows formed by this technology is of good quality with uniform wall thickness, light oxidation.
-
Current assisted Superplastic Forming of titanium alloy
MATEC Web of Conferences, 2015Co-Authors: Guofeng Wang, Tao Zhao, Yuelin Wang, Wu Xuesong, Dai Xiangxiang, Qi LiuAbstract:Current assisted Superplastic Forming combines electric heating technology and Superplastic Forming technology, and can overcome some shortcomings of traditional Superplastic Forming effectively, such as slow heating rate, large energy loss, low production efficiency, etc. Since formability of titanium alloy at room temperature is poor, current assisted Superplastic Forming is suitable for titanium alloy. This paper mainly introduces the application of current assisted Superplastic Forming in the field of titanium alloy, including Forming technology of double-hemisphere structure and bellows.
-
Superplastic Forming and diffusion bonding of ti 22al 24nb alloy
Journal of Materials Processing Technology, 2015Co-Authors: Changwen Wang, Guofeng Wang, Tao Zhao, He FangAbstract:Abstract In order to analyze Superplasticity and diffusion bonding of Ti–22Al–24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and Superplastic Forming were carried out based on Ti–22Al–24Nb alloy. The results show that Ti–22Al–24Nb has the best Superplasticity under temperature of 960 °C and strain rate of 0.0005 s−1; by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 °C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after Superplastic Forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature.
-
Superplastic Forming and diffusion bonding of Ti–22Al–24Nb alloy
Journal of Materials Processing Technology, 2015Co-Authors: Changwen Wang, Guofeng Wang, Tao Zhao, He FangAbstract:Abstract In order to analyze Superplasticity and diffusion bonding of Ti–22Al–24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and Superplastic Forming were carried out based on Ti–22Al–24Nb alloy. The results show that Ti–22Al–24Nb has the best Superplasticity under temperature of 960 °C and strain rate of 0.0005 s−1; by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 °C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after Superplastic Forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature.
-
Research on the controlling of the thickness distribution in Superplastic Forming
Journal of Materials Processing Technology, 2004Co-Authors: Kezhao Zhang, Guofeng Wang, Zhong-jin WangAbstract:Abstract In Superplastic Forming, the controlling of the thickness distribution is a very important problem. Since 1982, the authors have been developing the technology for controlling the thickness distribution in Superplastic Forming. Up to now, some new methods, such as Superplastic Forming accompanied by compression in the axial direction, direct and reverse Superplastic Forming and Superplastic moving die have been applied successfully to the fabrication of some parts with complex shapes. With the aid of finite element software, accurate control of the thickness distribution in Superplastic Forming has been achieved.
Tao Zhao - One of the best experts on this subject based on the ideXlab platform.
-
Current Assisted Superplastic Forming of Titanium Alloy Bellows
Materials Science Forum, 2016Co-Authors: Guofeng Wang, Tao Zhao, Mo Yang, Xiang Yu ZhaoAbstract:Titanium alloy bellows has advantages of light weight, excellent mechanical property, good heat resistance and corrosion resistance, etc. But the cold formability of titanium alloy is poor, so it is difficult to manufacture titanium alloy bellows by traditional mechanical Forming and hydroForming. In this paper, current assisted Superplastic Forming technology was used to process titanium alloy bellows, which could overcome some shortcomings of traditional Superplastic Forming effectively, such as slow heating rate, high energy loss and low production efficiency. And titanium alloy bellows formed by this technology is of good quality with uniform wall thickness, light oxidation.
-
Current assisted Superplastic Forming of titanium alloy
MATEC Web of Conferences, 2015Co-Authors: Guofeng Wang, Tao Zhao, Yuelin Wang, Wu Xuesong, Dai Xiangxiang, Qi LiuAbstract:Current assisted Superplastic Forming combines electric heating technology and Superplastic Forming technology, and can overcome some shortcomings of traditional Superplastic Forming effectively, such as slow heating rate, large energy loss, low production efficiency, etc. Since formability of titanium alloy at room temperature is poor, current assisted Superplastic Forming is suitable for titanium alloy. This paper mainly introduces the application of current assisted Superplastic Forming in the field of titanium alloy, including Forming technology of double-hemisphere structure and bellows.
-
Superplastic Forming and diffusion bonding of ti 22al 24nb alloy
Journal of Materials Processing Technology, 2015Co-Authors: Changwen Wang, Guofeng Wang, Tao Zhao, He FangAbstract:Abstract In order to analyze Superplasticity and diffusion bonding of Ti–22Al–24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and Superplastic Forming were carried out based on Ti–22Al–24Nb alloy. The results show that Ti–22Al–24Nb has the best Superplasticity under temperature of 960 °C and strain rate of 0.0005 s−1; by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 °C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after Superplastic Forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature.
-
Superplastic Forming and diffusion bonding of Ti–22Al–24Nb alloy
Journal of Materials Processing Technology, 2015Co-Authors: Changwen Wang, Guofeng Wang, Tao Zhao, He FangAbstract:Abstract In order to analyze Superplasticity and diffusion bonding of Ti–22Al–24Nb, uniaxial tensile experiment at high temperature, vacuum diffusion bonding and Superplastic Forming were carried out based on Ti–22Al–24Nb alloy. The results show that Ti–22Al–24Nb has the best Superplasticity under temperature of 960 °C and strain rate of 0.0005 s−1; by observing the diffusion bonding interface by metallographic microscope and conducting shear strength tests, it finds that under temperature of 960 °C and holding time of 2 h, with the increase of pressure within certain limit, effect of diffusion bonding gets better; after Superplastic Forming, the box-shaped component fits the die well, wall thickness is well distributed in general, and it has enough tensile strength at room temperature and high temperature.
Ming Jen Tan - One of the best experts on this subject based on the ideXlab platform.
-
Hybrid Superplastic Forming of Non-Superplastic AZ31 Mg Alloy
Materials Science Forum, 2016Co-Authors: Mei Ling Guo, Ming Jen Tan, Xu Song, Beng Wah ChuaAbstract:In this work, magnesium alloy sheets of non-Superplastic grade AZ31 were successfully formed by a proposed hybrid Superplastic Forming at 400 °C within 22 min. During the Forming process, hot drawing first formed the part partially from the starting metal sheet within a few seconds, and then followed by a designed gas Forming process to achieve the desired conical shape by high gas pressure at a targeted strain rate. The maximum thinning of 59 % was found to occur at the first contact area between the material and the punch. The thickness distribution and Superplastic deformation behavior during the hybrid Superplastic Forming were investigated. In addition, the microstructure evolutions of AZ31 at different Forming stages were examined by electron backscatter diffraction. Superplastic Forming capability of the non-Superplastic grade magnesium alloy was achieved. Furthermore, the part formed by this Superplastic-like Forming was done faster and attained a more even material distribution than conventional Superplastic Forming.
-
Investigation of process parameters in Superplastic Forming of mechanical pre-formed sheet by FEM
Key Engineering Materials, 2010Co-Authors: Jun Liu, Ming Jen Tan, Sylvie Castagne, Yingyot Aue-u-lan, Kai Soon Fong, Anders W.e. JarforsAbstract:Conventional Superplastic Forming has been applied in automotive and aerospace industries for a few decades. Recently, Superplastic Forming combined with mechanical pre-Forming process has been rep ...
-
Three-dimensional modeling and simulation of Superplastic Forming
Journal of Materials Processing Technology, 2004Co-Authors: Ming Jen Tan, K.m. LiewAbstract:Abstract The computational details of a viscoplastic finite element analysis of three-dimensional Superplastic Forming (SPF) are discussed in this paper. Two typical Superplastic Forming shapes, conical bulging and rectangle box bulging, were analyzed and the experiment of conical bulging was performed to verify the numerical simulation. The inverse identification of Superplastic material parameters incorporating the finite element method and an optimization technique was developed and an activity rule was proposed for effective selection of measurement locations in the experiment. Based on the numerical modeling, the influence of many factors such as the frictional coefficient, strain rate sensitivity and strain rate on the thickness distribution was studied and some useful conclusions were drawn.
-
Sigma phase precipitation during Superplastic Forming of duplex stainless steel
Materials at High Temperatures, 2002Co-Authors: S.n. Patankar, Ming Jen TanAbstract:Superplastic Forming of duplex stainless steel when attempted at 950°C showed strong evidence of sigma phase formation. This was accompanied by cavitation. The cavity density was maximum at the most deformed region, namely the apex of the formed cone, and pressures as high as 1.7 MPa had to be maintained during the Superplastic Forming operation
