- Wang Jian
Wang Jian
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
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Search for this author on this site - Han Yinben
- Zhang Tiebang
- Hu Rui
- Kou Hongchao
- Li Jinshan
- Zhang Pingxiang
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Microstructure and mechanical properties of solution strengthened Ni-20Cr-18W rolled superalloy were investigated. Microstructure features and phase composition investigations indicate the average equiaxed grain size of the as-rolled alloy is 20~30 μm (ASTM 7). Significant annealing twins can be observed within the microstructure and most M6C-type carbides mainly disperse on the grain boundary. As-rolled Ni-20Cr-18W superalloy maintains a high tensile strength due to the small grain size. Low ductility of the as-rolled superalloy can be ascribed to M6C-type carbides, which act as crack source on the grain boundary, and the transgranular fracture features with typical dimple-ductile characteristics are observed.
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[Wang Jian, Han Yinben, Zhang Tiebang, Hu Rui, Kou Hongchao, Li Jinshan, Zhang Pingxiang. Microstructure Evolution and Mechanical Properties of As-rolled Ni-20Cr-18W Base Superalloy[J]. Rare Metal Materials and Engineering,2014,43(12):3018~3021.]
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History
- Received:December 21,2013
- Online: April 16,2015