Transactions of Materials and Heat Treatment

Title：Study on technology and microstructure of superalloy GH4169 during tube coating extrusion

Authors： WANG Zhong-tang ZHANG Shi-hong CHENG Ming LI De-fu

Unit： Shenyang Ligong University Chinese Academy of Sciences General Research Institute for Nonferrous Metals

KeyWords： superalloy GH4169 tube coating extrusion assembled die extrusion

ClassificationCode：TG376.2

year,vol(issue):pagenumber：2010,35(4):48-51

Abstract：

The technological parameters of tube extrusion for superalloy GH4169 were determined by experimental research. The law for parameters of extrusion force were studied. The microstructure evolution of superalloy GH4169 tube extruded was analyzed. The results show that the optimal extruded technological parameters as follows: slug temperature being 1080~1100 ℃, tools temperature being 350~500 ℃, and extrusion ratio being 7[CD*2]14,Using special glass lubricant. The texture of extruded tube improves obviously, and the grain dimension of extruded tube changed from 150 μm to 50 μm. The extrusion forming on superalloy GH4169 was studied by coating extrusion，assembled die of tube extrusion and drawing extrusion,and the eligible supperalloy GH4169 tube was obtained.

Funds：

国家自然科学重点基金项目（50834008）

Reference：

［1］冶军.美国镍基高温合金[M].北京：科学出版社，1978.
［2］师昌绪. 中国高温合金四十年[M].北京：中国科学技术出版社,1996.
［3］John F R. Superalloy 718A look at the first 30 year[M]. Journal of Metals. New York: Metallurgical Society of AIME,1988.
［4］Zhang Shihong, Yang ke, Xu Yi,et al. Lubrication in hot tube extrusion of superalloys and Ti alloys[J]. Journal of Materials Science & Technology，2001,17(1): 113-114.
［5］Zhang Shihong，Wang Zhongtang, Qiao Bing.Research on processing and microstructural evolution of superalloy inconel 718 during hot tube extrusion[J]. Journal of Materials Science and Technology, 2005, 21(2):175-178.
［6］Goetz R L, Jain V K, Lombard C M. Effect of core insulation on the quality of the extrudate in canned extrusions of γ\|titanium aluminide[J]. Journal of Materials Processing Technology，1992,35(1): 37-60.

Service：

【This site has not yet opened Download Service】【Add Favorite】