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| Uniaxial Time��Dependent Ratcheting of SS304 Stainless Steel at High Temperatures |
| KANG Guo��zheng,ZHANG Juan,SUN Ya��fang,KAN Qian��hua |
| Department of Applied Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China |
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Abstract The uniaxial time��dependent strain cyclic behaviors and ratcheting of SS304 stainless steel were studied at high temperatures (350 �� and 700 ��). The effects of straining and stressing rates, holding time at the peak and/or valley of each cycle in addition to ambient temperature on the cyclic softening/hardening behavior and ratcheting of the material were discussed. It can be seen from experimental results that the material presents remarkable time dependence at 700 ��, and the ratcheting strain depends greatly on the stressing rate, holding time and ambient temperature. Some significant conclusions are obtained, which are useful to build a constitutive model describing the time��dependent cyclic deformation of the material.
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Received: 01 January 1900
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2007, Vol. 14 
