EFFECT OF DYNAMIC STRAIN AGING ON FATIGUE--CREEP BEHAVIOR OF 316L AUSTENITIC STAINLESS STEEL

Acta Metall Sin

2009, Vol. 45

Issue (3): 326-330 DOI:

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EFFECT OF DYNAMIC STRAIN AGING ON FATIGUE--CREEP BEHAVIOR OF 316L AUSTENITIC STAINLESS STEEL

JIANG Huifeng^1;2; CHEN Xuedong¹;FAN Zhichao¹;DONG Jie^1;2;JIANG Heng¹;LU Shouxiang²

1 National Technology Research Center on Pressure Vessel and Pipeline Safety Engineering; Hefei General Machinery Research Institute; Hefei 230031
2 Department of Safety Science and Engineering; University of Science and Technology of China; Hefei 230027

Cite this article:

JIANG Huifeng CHEN Xuedong FAN Zhichao DONG Jie JIANG Heng LU Shouxiang. EFFECT OF DYNAMIC STRAIN AGING ON FATIGUE--CREEP BEHAVIOR OF 316L AUSTENITIC STAINLESS STEEL. Acta Metall Sin, 2009, 45(3): 326-330.

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Abstract

The fatigue--creep behaviors of hot rolled and dynamic strain aging pre--treated 316L austenitic stainless steels were investigated under different loading conditions at 550 ℃. Under stress control mode, the macroscopic manifestation of dynamic strain aging is the abrupt displacement jumps during cyclic deformation. By comparing with the hot rolled treatment the dynamic strain aging pre--treatment makes the cyclic strain amplitude decrease and the cycle number at the first abrupt displacement jump postpone, i.e., the material strength is enhanced and fatigue--creep life is effectively prolonged.

Key words: 316L stainless steel fatigue-creep dynamic strain aging stress control high temperature

Received: 01 September 2008

ZTFLH:	O346.2
	TG142.71

Fund:

Supported by National Great Project of Scientific and Technical Supporting Program of China During the 11th Five--year Plan (No.2006BAK02B02--02) and Anhui Province Outstanding Youth Fund (No.08040106827)

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2009/V45/I3/326

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