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LOW CYCLE FATIGUE OF Cr-Mn-N STAINLESS STEEL |
XIA Yuebo;WANG Zhongguang Institute of Metal Research; Academia Sinica; Shenyang XIA Yuebo; associate professor; Institute of Metal Research; Academia Sinica;Shenyang 110015 |
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Cite this article:
XIA Yuebo;WANG Zhongguang Institute of Metal Research; Academia Sinica; Shenyang XIA Yuebo; associate professor; Institute of Metal Research; Academia Sinica;Shenyang 110015. LOW CYCLE FATIGUE OF Cr-Mn-N STAINLESS STEEL. Acta Metall Sin, 1989, 25(6): 37-42.
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Abstract An investigation was conducted to examine the symmetric lowcycle push-pull fatigue behaviour of the Cr-Mn-N dual-phase stainless steel whichwas separated into two specimen groups A and B by solution treated at 1050 and1250℃ respectively. The fatigue life of A is almost twice as long as B under sametotal amplitude of strain. Within the tested amplitude range of strain, ±0.4-±1.2%, the cyclic softening is observed both of them after the cycle saturated, whilethe saturation stage is earlier reached under lower amplitude of strain. The aver-age energy loss of each cycle increases and the sum of energy loss of total life ofeach specimen decreases with the increase of strain amplitude. Observation on thefatigue fracture surface under SEM shows that the specimen A is mixed type and thetransgranular mode predominantly with clear fatigue striation, and the specimen Bis mainly the intergranular mode.
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Received: 18 June 1989
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1 中国科学院金属研究所.Cr-Mn-N无镍不锈钢综合简介,金属研究所内部资料,1972 2 柴田浩司,名村夏树,岸本康夫,藤田利夫.铁钢,1983;69(16) :2076 3 Xia Y B (夏月波), Wang Z G (王中光). Phys Status Solidi, (a), 1987; 103: 389 4 Raske D T, Morrow J D. ASTM STP 465, 1969: 1 |
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