MICROSTRUCTURE, TENSILE PROPERTIES AND FRACTURE-BEHAVIOR OF DOUBLE-AGED 8090 AL-LI ALLOY

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	MICROSTRUCTURE, TENSILE PROPERTIES AND FRACTURE-BEHAVIOR OF DOUBLE-AGED 8090 AL-LI ALLOY
	Y. L. Liu; Z. Q. Hu; Y. Zhang; H. E. Zhao; C. X. Shi
	1993
发表期刊	Zeitschrift Fur Metallkunde
ISSN	0044-3093
卷号	84 期号:11 页码:811-815
摘要	In the present work, an investigation has been made to explore the influence of double-aging on the microstructure and proper ties of 8090 Al - Li alloys by using the orthogonal main-effect plan to arrange experiments. Results show that both first step and second step aging have great influence on the precipitation and growth of delta' and grain boundary equilibrium phases. The first step aging promotes the nucleation of delta' phase and results in the increase of density of delta' phase in the final microstructure. The range analysis on the tensile tests indicates that the influence of first step and second step aging on the ultimate tensile strength (UTS), yield strength (YS) and elongation (EL) is different. As for the alloy used for this study, heat treatment of 100 degrees C for 8 h plus 190 degrees C for 4 h is a good processing for getting a better combination of UTS, YS and EL. The fracture mode of double-aged specimens can be divided in three ways: transgranular tearing, transgranular shearing with intergranular delamination and intergranular fracture from under, peak and overaging condition.
部门归属	liu, yl (reprint author), acad sinica,inst met res,shenyang 110015,peoples r china
关键词	Aluminum Lithium Alloys Ductility
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/39080
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. L. Liu,Z. Q. Hu,Y. Zhang,et al. MICROSTRUCTURE, TENSILE PROPERTIES AND FRACTURE-BEHAVIOR OF DOUBLE-AGED 8090 AL-LI ALLOY[J]. Zeitschrift Fur Metallkunde,1993,84(11):811-815.
APA	Y. L. Liu,Z. Q. Hu,Y. Zhang,H. E. Zhao,&C. X. Shi.(1993).MICROSTRUCTURE, TENSILE PROPERTIES AND FRACTURE-BEHAVIOR OF DOUBLE-AGED 8090 AL-LI ALLOY.Zeitschrift Fur Metallkunde,84(11),811-815.
MLA	Y. L. Liu,et al."MICROSTRUCTURE, TENSILE PROPERTIES AND FRACTURE-BEHAVIOR OF DOUBLE-AGED 8090 AL-LI ALLOY".Zeitschrift Fur Metallkunde 84.11(1993):811-815.