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Microstructure and tensile properties of dual structure superalloys at intermediate temperatures
Li, Xiangwei; Dong, Jiasheng; Wang, Li; Lou, Langhong; Zhang, Jian
2019-03-28
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume751Pages:15-22
AbstractThe microstructure and tensile properties of dual structure superalloys were investigated. Dual structure superalloys are directionally solidified into fine grains and columnar grains with aid of seeds technique. In the transition zone coarse grains and pseudo columnar grains are observed. MC carbides evolve from blocky to script-like and volume fraction of micro-pores decreases during transition from fine grains to columnar grains. The ultimate tensile strength of dual structure superalloys is slightly lower than that of the base superalloys with only fine grains or columnar grains in the present experiment, but reduction of ductility of the dual structure superalloys is not observed. The deformation and fracture behaviors of dual structure superalloys are analyzed based on the grain rotation and surface deformation morphologies.
KeywordSuperalloys Tensile properties Dual structure Fine grain Columnar grain
Indexed BySCI
Language英语
WOS IDWOS:000463128800003
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81261
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Li, Xiangwei,Dong, Jiasheng,Wang, Li,et al. Microstructure and tensile properties of dual structure superalloys at intermediate temperatures[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,751:15-22.
APA Li, Xiangwei,Dong, Jiasheng,Wang, Li,Lou, Langhong,&Zhang, Jian.(2019).Microstructure and tensile properties of dual structure superalloys at intermediate temperatures.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,751,15-22.
MLA Li, Xiangwei,et al."Microstructure and tensile properties of dual structure superalloys at intermediate temperatures".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 751(2019):15-22.
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