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	Phase transformation residual stress in granular structure
	Xu Fengyun ; Xu Xuexia ; Bai Bingzhe ; Fang Hongsheng
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical/ compressive strength finite element analysis granular structure internal stresses martensitic transformations steel stress-strain relations yield strength/ phase transformation residual stress austenite-martensite transformation finite element method martensite island macroscopic strain-stress relationship tension hydrostatic stress ferrite matrix compression stress ferrite yield strength tangent modulus air cooling granular structure steel volume expansion FeMnSiJk/ A8130K Martensitic transformations A6470K Solid-solid transitions A6220F Deformation and plasticity A8140L Deformation, plasticity and creep/ Fe/ss Mn/ss Si/ss
中文摘要	The phase transformation residual stress caused by the volume expansion during transformation from austenite to martensite was calculated by finite element method based on the assumption of specific distribution and shape of martensite island. The effect of residual stress on the macroscopic strain-stress relationship is also discussed. The results show that tension hydrostatic stress exists in ferrite matrix, compression stress exists in martensite island. The residual stress increases with the increase of the martensite amount, ferrite yield strength and tangent modulus. There is a critical martensite amount for ferrite yielding entirely. The residual stress contributes to the continuous yielding of air cooling granular structure steel but effects the yield strength of granular structure little.
语种	中文
出版者	Science Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78233]
专题	清华大学
推荐引用方式 GB/T 7714	Xu Fengyun,Xu Xuexia,Bai Bingzhe,et al. Phase transformation residual stress in granular structure[J],2010, 2010.
APA	Xu Fengyun,Xu Xuexia,Bai Bingzhe,&Fang Hongsheng.(2010).Phase transformation residual stress in granular structure..
MLA	Xu Fengyun,et al."Phase transformation residual stress in granular structure".(2010).

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