Distribution uniformity of added elements in twin-roll cast Al-Zn-Mg-Cu alloy by multi-electromagnetic fields

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	Distribution uniformity of added elements in twin-roll cast Al-Zn-Mg-Cu alloy by multi-electromagnetic fields
其他题名	Distribution uniformity of added elements in twin-roll cast Al–Zn–Mg–Cu alloy by multi-electromagnetic fields
	Su Xin 1; Xu GuangMing 1; Jiang DingHui 3
	2015
发表期刊	RARE METALS
ISSN	1001-0521
卷号	34 期号:8 页码:546-552
摘要	The micromorphology and the concentration of massive precipitates produced by twin-roll casting (TRC) processes without and with multi-electromagnetic fields for Al-Zn-Mg-Cu alloy at 670 degrees C were investigated in detail by means of optical microscopy (OM) and electron probe micro analyzer (EPMA). The results clearly show that under a 0.2 T static magnetic field, the macro-segregation bands are remarkably alleviated according to the order of uniform static magnetic field, half-wave oscillating electromagnetic field as well as alternating oscillating electromagnetic field, as compared with the non-field TRC process (B = 0). Moreover, under the alternating oscillating electromagnetic TRC process, almost all segregation bands disappear. Additionally, through the observation on a smaller scale, the netlike precipitates elongated and broken by electromagnetic force, and replaced by numerous bulk depositions. EPMA analysis shows that the added atoms are diffused from deposition to alpha (Al) matrix, resulting in that the solute concentration in and around the precipitates is tending toward uniformity and stability.
其他摘要	The micromorphology and the concentration of massive precipitates produced by twin-roll casting (TRC) processes without and with multi-electromagnetic fields for Al–Zn–Mg–Cu alloy at 670 ℃ were investigated in detail by means of optical microscopy (OM) and electron probe micro analyzer (EPMA). The results clearly show that under a 0.2 T static magnetic field, the macro-segregation bands are remarkably alleviated according to the order of uniform static magnetic field, half-wave oscillating electromagnetic field as well as alternating oscillating electromagnetic field, as compared with the non-field TRC process (B = 0). Moreover, under the alternating oscillating electromagnetic TRC process, almost all segregation bands disappear. Additionally, through the observation on a smaller scale, the netlike precipitates elongated and broken by electromagnetic force, and replaced by numerous bulk depositions. EPMA analysis shows that the added atoms are diffused from deposition to α (Al) matrix, resulting in that the solute concentration in and around the precipitates is tending toward uniformity and stability.
关键词	MICROSTRUCTURES Al-Zn-Mg-Cu alloy Electromagnetic field Twin-roll casting Macro-segregation bands
收录类别	CSCD
语种	英语
资助项目	[National Basic Research Program of China]
CSCD记录号	CSCD:5482487
引用统计	被引频次：3[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/147611
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.上海市地震局 3.Guangdong Donggong Informat Science & Technol Co Ltd, Foshan 510000, Peoples R China
推荐引用方式 GB/T 7714	Su Xin,Xu GuangMing,Jiang DingHui. Distribution uniformity of added elements in twin-roll cast Al-Zn-Mg-Cu alloy by multi-electromagnetic fields[J]. RARE METALS,2015,34(8):546-552.
APA	Su Xin,Xu GuangMing,&Jiang DingHui.(2015).Distribution uniformity of added elements in twin-roll cast Al-Zn-Mg-Cu alloy by multi-electromagnetic fields.RARE METALS,34(8),546-552.
MLA	Su Xin,et al."Distribution uniformity of added elements in twin-roll cast Al-Zn-Mg-Cu alloy by multi-electromagnetic fields".RARE METALS 34.8(2015):546-552.