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Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion
Pan, Hucheng; Yang, Changlin; Yang, Yantao; Dai, Yongqiang; Zhou, Dengshan; Chai, Linjiang; Huang, Qiuyan; Yang, Qingshan; Liu, Shengming; Ren, Yuping; Qin, Gaowu
2019-02-15
Source PublicationMATERIALS LETTERS
ISSN0167-577X
Volume237Pages:65-68
AbstractWe reported that the Mg-Ca dilute alloys can exhibit ultra-fine grain size (less than 1 um) and the exceptionally high yield strength, e.g., similar to 290 MPa in the Mg-0.1 wt% Ca alloy and similar to 377 MPa in Mg-1.0 wt% Ca alloy, achieved by conventional one-step extrusion. Both increased activations of non-basal slips due to Ca addition and the dynamic partitioning of Ca atoms during extrusion are believed to play the critical role in facilitating formation of the submicron matrix grains. Multi-scale substructures, including the ultrafine recrystallized grains, the mono-dispersive Mg-2 Ca nano-phases, residual dislocations and Ca enriched sub-grain boundaries contribute to the high strength. (C) 2018 Elsevier B.V. All rights reserved.
KeywordWrought Mg alloy Grain size Segregations Recrystallization Strength properties
Indexed BySCI
Language英语
WOS IDWOS:000454609700017
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81371
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Pan, Hucheng,Yang, Changlin,Yang, Yantao,et al. Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion[J]. MATERIALS LETTERS,2019,237:65-68.
APA Pan, Hucheng.,Yang, Changlin.,Yang, Yantao.,Dai, Yongqiang.,Zhou, Dengshan.,...&Qin, Gaowu.(2019).Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion.MATERIALS LETTERS,237,65-68.
MLA Pan, Hucheng,et al."Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion".MATERIALS LETTERS 237(2019):65-68.
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