Corrosion behavior of an Al-6Mg-Sc-Zr alloy

IMR OpenIR

	Corrosion behavior of an Al-6Mg-Sc-Zr alloy
其他题名	Corrosion behavior of an Al-6Mg-Sc-Zr alloy
	Xu GX 1; Tao BW 1; Liu JH 1; Li SM 1
	2005
发表期刊	RARE METALS
ISSN	1001-0521
卷号	24 期号:3 页码:246-251
摘要	The corrosion behavior of an Al-6Mg-Sc-Zr alloy was studied and compared with that of an Al-6Mg-Zr alloy. The addition of scandium into the Al-6Mg-Zr alloy reduced the susceptibility to exfoliation corrosion. By using the constant load tensile method in a 3.5 wt.% NaCl solution, the resistance to SCC of the Al-6Mg-Se-Zr alloy was higher than that of the Al-6Mg-Zr alloy. When the specimens were not applied with an anodic current, the Al-6Mg-Sc-Zr alloy was resistance to SCC and no brittle cracking was found on the fracture surface. When an anodic current was applied, the Al-6Mg-Sc-Zr alloy specimens failed as a result of accelerated corrosion rather than SCC. It was believed that the addition of scandium resulted in (Al3SC, Zr) particles that greatly refined grains and promoted the formation of homogeneous discontinuous distribution of beta-phase in the alloy base, which much contributed to good corrosion resistance of the Al-6Mg-Sc-Zr alloy.
其他摘要	The corrosion behavior of an Al-6Mg-Sc-Zr alloy was studied and compared with that of an Al-6Mg-Zr alloy.The addition of scandium into the Al-6Mg-Zr alloy reduced the susceptibility to exfoliation corrosion. By using the constant load tensile method in a 3.5 wt.% NaCl solution, the resistance to SCC of the Al-6Mg-Sc-Zr alloy was higher than that of the Al-6Mg-Zr alloy. When the specimens were not applied with an anodic current, the Al-6Mg-Sc-Zr alloy was resistance to SCC and no brittle cracking was found on the fracture surface. When an anodic current was applied, the Al-6Mg-Sc-Zr alloy specimens failed as a result of accelerated corrosion rather than SCC. It was believed that the addition of scandium resulted in (Al3Sc, Zr) particles that greatly refmed grains and promoted the formation of homogeneous discontinuous distribution of β-phase in the alloy base, which much contributed to good corrosion resistance of the Al-6Mg-Sc-Zr alloy.
关键词	SC RECRYSTALLIZATION corrosion Al-Mg-Sc-Zr alloy SCC test exfoliation corrosion scandium
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:2021057
引用统计	被引频次：5[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/143591
专题	中国科学院金属研究所
作者单位	1.Beijing University Aeronaut & Astronaut 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Xu GX,Tao BW,Liu JH,et al. Corrosion behavior of an Al-6Mg-Sc-Zr alloy[J]. RARE METALS,2005,24(3):246-251.
APA	Xu GX,Tao BW,Liu JH,&Li SM.(2005).Corrosion behavior of an Al-6Mg-Sc-Zr alloy.RARE METALS,24(3),246-251.
MLA	Xu GX,et al."Corrosion behavior of an Al-6Mg-Sc-Zr alloy".RARE METALS 24.3(2005):246-251.