LOW-CYCLE FATIGUE BEHAVIOR OF AS-EXTRUDED Mg-x%Al-3%Ni ALLOYS

IMR OpenIR

	LOW-CYCLE FATIGUE BEHAVIOR OF AS-EXTRUDED Mg-x%Al-3%Ni ALLOYS
其他题名	LOW-CYCLE FATIGUE BEHAVIOR OF AS-EXTRUDED Mg-x%Al-3%Ni ALLOYS
	Chen Lijia; Wang Xin; Zhi Ying; Xu Yanwu
	2009
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	45 期号:7 页码:856-860
摘要	Due to the low density, high specific strength and stiffness, magnesium alloys are being considered for automotive and aerospace applications. The structural applications of magnesium components need a decent low-cycle fatigue performance, because cyclic loading is often encountered. In order to identify the low-cycle fatigue behavior of the newly developed Mg-x%Al-3%Ni(x=4, 5, 6, 7, mass fraction) extruded magnesium alloys with different contents of Al, the total strain-controlled low-cycle fatigue tests were performed at room temperature. The cyclic stress response, strain fatigue life and cyclic stress-strain behaviors were investigated for the hot-extruded Mg-x%Al-3%Ni alloys. The results of the low-cyclic fatigue tests show that the hot-extruded Mg-x%Al-3%Ni alloys exhibit the cyclic strain hardening during fatigue deformation. The dependences of the strain fatigue life on plastic strain amplitude and elastic strain amplitude can be described by the Coffin-Manson and Basquin equations, respectively. In the hot extruded Mg-x%Al-3%Ni alloys with different contents of Al, the extruded Mg-5%Al-3%Ni alloy gives the longest fatigue life and the highest fatigue resistance. In addition, a linear relation between the cyclic stress amplitude and cyclic strain amplitude can be noted for the hot-extruded Mg-x%Al-3%Ni alloys.
关键词	MAGNESIUM Mg-x%Al-3%Ni alloy hot-extrusion cyclic stress response fatigue life cyclic stress-strain
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3664581
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141718
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Chen Lijia,Wang Xin,Zhi Ying,et al. LOW-CYCLE FATIGUE BEHAVIOR OF AS-EXTRUDED Mg-x%Al-3%Ni ALLOYS[J]. ACTA METALLURGICA SINICA,2009,45(7):856-860.
APA	Chen Lijia,Wang Xin,Zhi Ying,&Xu Yanwu.(2009).LOW-CYCLE FATIGUE BEHAVIOR OF AS-EXTRUDED Mg-x%Al-3%Ni ALLOYS.ACTA METALLURGICA SINICA,45(7),856-860.
MLA	Chen Lijia,et al."LOW-CYCLE FATIGUE BEHAVIOR OF AS-EXTRUDED Mg-x%Al-3%Ni ALLOYS".ACTA METALLURGICA SINICA 45.7(2009):856-860.