Microstructures and Mechanical Properties of Inconel 718 Alloy at Ultralow Temperatures

被引：8

作者：

Yao, C. G. ^{[1
,2
]}

Lv, H. J. ^{[2
]}

Yi, D. Q. ^{[1
]}

Meng, S. ^{[2
]}

Xiao, L. R. ^{[1
]}

Wang, B. ^{[1
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[2] Aerosp Res Inst Mat & Proc Technol, Beijing 100076, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2018年 / 27卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Inconel; 718; alloy; mechanical properties; microstructure; powder metallurgy; ultralow temperature; PRESSED SUPERALLOY INCONEL-718; LOW-CYCLE FATIGUE; DEFORMATION-BEHAVIOR; HEAT-TREATMENT; CRACK-GROWTH; IN718;

D O I：

10.1007/s11665-018-3309-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructures and mechanical properties of powder metallurgy Inconel 718 alloy were investigated in the temperatures range between 25 and - 253 A degrees C. Tensile strength increased with the decrease in temperature, while the ductility first increased and then decreased. There was no significant change in impact toughness. When the temperature was - 253 A degrees C, a zigzag stress-strain curve was observed for the alloy, owing to the interaction of dislocation glide and twinning, which effectively maintained the relatively good ductility.

引用

页码：2060 / 2069

页数：10

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