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Distribution uniformity of added elements in twin-roll cast Al-Zn-Mg-Cu alloy by multi-electromagnetic fields
Alternative TitleDistribution uniformity of added elements in twin-roll cast Al–Zn–Mg–Cu alloy by multi-electromagnetic fields
Su Xin1; Xu GuangMing1; Jiang DingHui3
2015
Source PublicationRARE METALS
ISSN1001-0521
Volume34Issue:8Pages:546-552
AbstractThe 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.
Other AbstractThe 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.
KeywordMICROSTRUCTURES Al-Zn-Mg-Cu alloy Electromagnetic field Twin-roll casting Macro-segregation bands
Indexed ByCSCD
Language英语
Funding Project[National Basic Research Program of China]
CSCD IDCSCD:5482487
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/147611
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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.
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