EFFECT OF CYCLIC STRESS ON THE HIGH-TEMPERATURE CREEP-BEHAVIOR OF AL-MG ALLOYS

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	EFFECT OF CYCLIC STRESS ON THE HIGH-TEMPERATURE CREEP-BEHAVIOR OF AL-MG ALLOYS
	Z. Yang; Z. R. Wang; X. B. Hu; Z. G. Wang
	1993
发表期刊	Acta Metallurgica Et Materialia
ISSN	0956-7151
卷号	41 期号:3 页码:933-940
摘要	The effect of cyclic stress on high temperature creep and also the dislocation structures developed during cyclic creep for three Al-Mg solid solutions have been studied. When the steady state creep rate is in the range of 10(-8)-10(-3) s-1, cyclic creep with complete unloading (R = 0) exhibited only the transition from class M to class A creep instead of the two transitions from class M to class A and then to class M again in the corresponding static creep. The threshold stress for the transition in cyclic creep was found to be close to or larger than that for the class A to class M transition in the static creep. With increase in magnesium content, cyclic creep retardation became stronger at lower stresses. However the transition from retardation to acceleration in the cyclic creep has been observed at higher stress levels only in the high magnesium alloys. Also found were two types of relationships between the unloading amount and steady state creep rate. The micromechanisms of cyclic creep, especially the interaction of dislocations with solute atoms, have also been discussed.
部门归属	acad sinica, inst met res, natl lab fatigue & fracture mat, shenyang 110015, peoples r china.;yang, z (reprint author), univ toronto, dept met & mat sci, toronto m5s 1a4, ontario, canada
关键词	Solid-solution Alloys Room-temperature Polycrystalline Copper Ambient-temperature Oxide Dispersion Viscous Glide Strain Bursts Acceleration Aluminum Rupture
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/39164
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Yang,Z. R. Wang,X. B. Hu,et al. EFFECT OF CYCLIC STRESS ON THE HIGH-TEMPERATURE CREEP-BEHAVIOR OF AL-MG ALLOYS[J]. Acta Metallurgica Et Materialia,1993,41(3):933-940.
APA	Z. Yang,Z. R. Wang,X. B. Hu,&Z. G. Wang.(1993).EFFECT OF CYCLIC STRESS ON THE HIGH-TEMPERATURE CREEP-BEHAVIOR OF AL-MG ALLOYS.Acta Metallurgica Et Materialia,41(3),933-940.
MLA	Z. Yang,et al."EFFECT OF CYCLIC STRESS ON THE HIGH-TEMPERATURE CREEP-BEHAVIOR OF AL-MG ALLOYS".Acta Metallurgica Et Materialia 41.3(1993):933-940.