Realizing ultra-fine grains and ultra-high strength in conventionally extruded Mg-Ca-Al-Zn-Mn alloys: The multiple roles of nano-precipitations
文献类型：期刊论文
| 作者 | Li, Man1; Xie, Dongsheng1; Li, Jingren1; Xie, Hongbo1; Huang, Qiuyan2; Pan, Hucheng1; Qin, Gaowu1 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 175页码:7 |
| ISSN号 | 1044-5803 |
| 关键词 | Wrought magnesium alloy Dynamic recrystallization Microstructure evolution Ultra-high strength Precipitation |
| DOI | 10.1016/j.matchar.2021.111049 |
| 通讯作者 | Pan, Hucheng(panhc@atm.neu.edu.cn) |
| 英文摘要 | An ultra-high strength and low-cost magnesium wrought alloy, Mg-1Ca-1Al-0.3Zn-0.4Mn (wt%), has been fabricated by conventional extrusion, with yield strength of -435 MPa, the ultimate tensile strength of -449 MPa and the elongation of -4.2%. Mono-dispersive nano-precipitations, e.g., the Al2Ca phase and AlMn phase, have been induced during extrusion, which can effectively pin pyramidal dislocation motions in grain interiors and thus provide substantial nucleation sites for dynamic recrystallization in present Ca-containing Mg alloys. Simultaneously, these fine-precipitates distributing at the new grain boundaries can prevent their growths, which thus guarantee the ultra-fine grains formation (300?500 nm). After heat treatment, a higher number density of nano Al2Ca and AlMn phases can be further precipitated, which results in the alloy still maintaining the ultrahigh strength of -444 MPa. The multiple roles of the same nano-precipitations in both promoting the ultrafine grains formation and affording precipitation hardening have been clarified in present Mg wrought alloy. |
| 资助项目 | National Natural Science Foundation of China[51701211] ; National Natural Science Foundation of China[51971053] ; Project of Promoting Talents in Liaoning province[XLYC1808038] ; Young Elite Scientists Sponsorship Program by CAST[20192021QNRC001] ; Young Elite Scientists Sponsorship Program by CAST[20192021QNRC002] ; Fundamental Research Funds for the Central Universities[N2002011] ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science[2019JH3/30100040] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE INC |
| WOS记录号 | WOS:000647775400003 |
| 资助机构 | National Natural Science Foundation of China ; Project of Promoting Talents in Liaoning province ; Young Elite Scientists Sponsorship Program by CAST ; Fundamental Research Funds for the Central Universities ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science |
| 源URL | [http://ir.imr.ac.cn/handle/321006/161159]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Pan, Hucheng |
| 作者单位 | 1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Man,Xie, Dongsheng,Li, Jingren,et al. Realizing ultra-fine grains and ultra-high strength in conventionally extruded Mg-Ca-Al-Zn-Mn alloys: The multiple roles of nano-precipitations[J]. MATERIALS CHARACTERIZATION,2021,175:7. |
| APA | Li, Man.,Xie, Dongsheng.,Li, Jingren.,Xie, Hongbo.,Huang, Qiuyan.,...&Qin, Gaowu.(2021).Realizing ultra-fine grains and ultra-high strength in conventionally extruded Mg-Ca-Al-Zn-Mn alloys: The multiple roles of nano-precipitations.MATERIALS CHARACTERIZATION,175,7. |
| MLA | Li, Man,et al."Realizing ultra-fine grains and ultra-high strength in conventionally extruded Mg-Ca-Al-Zn-Mn alloys: The multiple roles of nano-precipitations".MATERIALS CHARACTERIZATION 175(2021):7. |
入库方式： OAI收割
来源：金属研究所
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