Study on Powder Metallurgy TC11 Alloy and Near-Net-Shape Process
The prealloyed powder metallurgy (PM) process is studied in this paper to prepare PM TC11 (Ti-6. 5Al3. 5Mo-l. 5Zr-0. 3Si) alloy, a kind of heat resistant titanium alloy. And HIP technology and PREP powders are used in the prealloyed processing to obtain full density material. Heat treatments are studied to optimize the microstructures and properties of the PM TC11 alloy. Near-Net-Shape processes are studied to fabricate PM TC11 parts. By using special dies, a large dimension thin wall integrity PM TC11 alloy spacecraft cabin with inner gridding stiffening ribs is near-net-shaped and no inner defect is detected. The results show that the PM TC11 alloy has the same good tensile properties as forged material and plus perfect high temperature elastic modulus. The microstructures of the PM TC11 alloy are fine and uniform and the typical ones are basket weave structures surrounded by equiaxed a. The PM TC11 alloy and suitable near-net-shape process can be used in the field of fabricating high performance-tocost,high reliability,lightweight and heat resistant parts for spacecrafts.
Heat resistant titanium alloy powder metallurgy hot isostatic pressing microstructure property nearnetshape
Wang Liang Lang Zebao Xu Xiaojing Shi Jinliang Jiang Yanqing Yao Caogen
Aerospace Research Institute of Material & Processing Technology,Beijing 100076,China
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
1839-1843
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）