EFFECT OF SLIP MODE ON CYCLIC BEHAVIOUR OF PRESTRAINED MATERIALS

Acta Metall Sin

1993, Vol. 29

Issue (4): 7-12 DOI:

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EFFECT OF SLIP MODE ON CYCLIC BEHAVIOUR OF PRESTRAINED MATERIALS

CHAI Huifen;RUAN Zheng;FAN Qunchen Xi'an Jiaotong University associate professor; Department of Materials; Xi'an Jiaotong University; Xi'an 710049

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CHAI Huifen;RUAN Zheng;FAN Qunchen Xi'an Jiaotong University associate professor; Department of Materials; Xi'an Jiaotong University; Xi'an 710049. EFFECT OF SLIP MODE ON CYCLIC BEHAVIOUR OF PRESTRAINED MATERIALS. Acta Metall Sin, 1993, 29(4): 7-12.

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Abstract The cyclic behaviours of two prestrained materials with different slip modeshave been compared. From the analysis of hysterisis loops, it is suggested that the decreasein back stress dominates the cyclic process of Cu-Zn alloy with planar slip mode, while thedecrease in frictional stress is the main factor affecting the behaviour of Cu with wavy slipmode.The relation between the dislocation configuration and internal stress has been also dis-cussed. By means of the relation just mentioned, the variations of dislocation configurationbefore and after fatigue of the two materials, the differences in their softening mechanismand mechanical behaviour could be interpreted.

Key words: slip mode fatigue softening hysteresis loop internal stress.

Received: 18 April 1993

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[5]	CHAI Huifen;RUAN Zheng;FAN Quncheng (Xi'an Jiaotong University)(Manuscript received 7 December; 1993; in revised form 10 June; 1994). SLIP BANDS OF PRESTRAINED AND CYCLED Cu AND Cu-Zn ALLOY[J]. 金属学报, 1994, 30(11): 502-506.
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