Ultra-high tensile strength via precipitates and enhanced martensite transformation in a FeNiAlC alloy

doi:10.1016/j.msea.2020.140498

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Ultra-high tensile strength via precipitates and enhanced martensite transformation in a FeNiAlC alloy
	Ma Y(马彦)1,2; Zhou LL(周玲玲)2; Yang MX(杨沐鑫)2; Yuan FP(袁福平)1,2; Wu XL(武晓雷)1,2
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2021-01-28
卷号	803 页码:10
关键词	Strain hardening Transformation-induced plasticity Heterogeneous structures Precipitates Twins
ISSN号	0921-5093
DOI	10.1016/j.msea.2020.140498
通讯作者	Yuan, Fuping(fpyuan@lnm.imech.ac.cn)
英文摘要	Aging and quenching at critical temperatures were applied to a hot-rolled (HR) Fe-24.86Ni-5.8Al-0.38C (mass%) dual-phase alloy to obtain B2 precipitates with various volume fractions and sizes. Higher yield strength and stronger strain hardening were achieved in the aged samples compared to these for the HR sample, and the corresponding deformation mechanisms were carefully revealed. The aged samples show stronger heterodeformation induced hardening compared to that for the HR sample. The amount of phase transformation during tensile tests is much higher for the aged sample compared to that for the HR sample due to the reduced stability of the austenite phase, which can be attributed to the high local stress level induced by undeformable and hard B2 precipitates around the austenite grains and reduction of nickel and aluminum in the austenite phase by diffusion from the austenite phase to the B2 precipitates during aging. Deformation-induced lath martensite with high dislocation density can be observed after tensile deformation, and these transformation-induced dislocations should have great impact on the strain hardening. Moreover, the density of twins becomes much higher for the martensite grains after tensile deformation, and these deformation-induced nanotwins should contribute significantly to the strain hardening, as the dynamic Hall-Petch effect.
分类号	一类
资助项目	National Key R&D Program of China[2017YFA0204402] ; National Natural Science Foundation of China[11672313] ; National Natural Science Foundation of China[11572328] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503]
WOS关键词	UNLOADING YIELD-POINT ; GRAIN-SIZE ; MECHANICAL-PROPERTIES ; MAXIMUM STRENGTH ; ENTROPY ALLOY ; STRAIN-RATE ; AL CONTENT ; PLASTICITY ; DEFORMATION ; DUCTILITY
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000612587900001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者	Yuan, Fuping
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86097]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 West Rd,North 4th Ring, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Ma Y,Zhou LL,Yang MX,et al. Ultra-high tensile strength via precipitates and enhanced martensite transformation in a FeNiAlC alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,803:10.
APA	马彦,周玲玲,杨沐鑫,袁福平,&武晓雷.(2021).Ultra-high tensile strength via precipitates and enhanced martensite transformation in a FeNiAlC alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,803,10.
MLA	马彦,et al."Ultra-high tensile strength via precipitates and enhanced martensite transformation in a FeNiAlC alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 803(2021):10.