EXPERIMENTAL STUDY ON NON-PROPORTIONALLY MULTIAXIAL TIME-DEPENDENT CYCLIC DEFORMATIONS OF SS304 STAINLESS STEEL AT HIGH TEMPERATURE

Acta Metall Sin

2005, Vol. 41

Issue (9): 963-968 DOI:

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EXPERIMENTAL STUDY ON NON-PROPORTIONALLY MULTIAXIAL TIME-DEPENDENT CYCLIC DEFORMATIONS OF SS304 STAINLESS STEEL AT HIGH TEMPERATURE

KAN Qianhua; KANG Guozheng; ZHANG Juan; LIU Yujie

Department of Applied Mechanics and Engineering; Southwest Jiaotong University; Chengdu 610031

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KAN Qianhua; KANG Guozheng; ZHANG Juan; LIU Yujie. EXPERIMENTAL STUDY ON NON-PROPORTIONALLY MULTIAXIAL TIME-DEPENDENT CYCLIC DEFORMATIONS OF SS304 STAINLESS STEEL AT HIGH TEMPERATURE. Acta Metall Sin, 2005, 41(9): 963-968 .

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Abstract The time-dependent strain cyclic characteristics and ratcheting behavior of SS304 stainless steel were studied by experiments under non-proportionally multiaxial cyclic loading and at 973 K. The effects of loading path, straining/stressing rate and holding-time at peak/valley of each cycle on cyclic softening/hardening behavior and ratcheting were discussed. It is shown from experimental results that the cyclic softening/hardening behavior and ratcheting of the material are characterized by apparent time-dependence, i.e., the cyclic deformation behaviors depend not only greatly on loading rate, but also apparently on holding-time, besides, the ratcheting behavior of the material also presents a great dependence on loading path at high temperature. Some results obtained are helpful to construct a time-dependent constitutive model of ratcheting.

Key words: SS304 stainless steel non-proportionality time-dependence

Received: 10 January 2005

ZTFLH:	O344.1
	TG146.1

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	KAN Qianhua
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	LIU Yujie

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2005/V41/I9/963

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[1]	KANG Guozheng; SUN Yafang; ZHANG Juan; KAN Qianhua. Time-Dependent Ratcheting Behavior of SS304 Stainless Steel Under Uniaxial Cyclic Loading at Room Temperature[J]. 金属学报, 2005, 41(3): 277-281 .
[2]	YANG Xianjie; GAO Qing; CAI Lixun; LIU Yujie. An Experimental Study on the Deformation Behavior of SS304 Stainless Steel UnderNonproportional Cyclic Stress and Strain at Room Temperature[J]. 金属学报, 2004, 40(9): 935-942 .

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