Jinshu Xie, Zhi Zhang, Shujuan Liu, Jinghuai Zhang, Jun Wang, Yuying He, Liwei Lu, Yunlei Jiao, and Ruizhi Wu, Developing new Mg-2RE-0.8Mn-0.6Ca-0.5Zn alloys with high strength and ductility via high-speed extrusion, Int. J. Miner. Metall. Mater.,(2022). https://doi.org/10.1007/s12613-022-2472-x
Cite this article as:
Jinshu Xie, Zhi Zhang, Shujuan Liu, Jinghuai Zhang, Jun Wang, Yuying He, Liwei Lu, Yunlei Jiao, and Ruizhi Wu, Developing new Mg-2RE-0.8Mn-0.6Ca-0.5Zn alloys with high strength and ductility via high-speed extrusion, Int. J. Miner. Metall. Mater.,(2022). https://doi.org/10.1007/s12613-022-2472-x
Research Article

Developing new Mg-2RE-0.8Mn-0.6Ca-0.5Zn alloys with high strength and ductility via high-speed extrusion

+ Author Affiliations
  • Received: 18 February 2022Revised: 4 March 2022Accepted: 10 March 2022Available online: 11 March 2022
  • Two new low-alloyed Mg-2RE-0.8Mn-0.6Ca-0.5Zn (wt%, RE=Sm or Y) alloys are developed, which can be produced on an industrial scale via relatively high-speed extrusion. These two alloys are not only comparable to commercial AZ31 alloy in extrudability, but also have superior mechanical properties, especially in terms of yield strength (YS). The excellent extrudability is related to less coarse second-phase particles and high initial melting point of the two as-cast alloys. The high strength-ductility mainly comes from the formation of fine grains, nano-spaced submicron/nano precipitates, and weak texture. Moreover, it is worth noting that the YS of the two alloys can maintain above 160 MPa at elevated temperature of 250°C, significantly higher than that of AZ31 alloy (YS: 45 MPa). The Zn/Ca solute segregation at grain boundaries, the improved heat resistance of matrix due to addition of RE and the high melting points of strengthening particles (Mn, MgZn2, and Mg-Zn-RE/Mg-Zn-RE-Ca) are mainly responsible for the excellent high-temperature strength.

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Share Article

    Article Metrics

    Article Views(71) PDF Downloads(15) Cited by()
    Proportional views

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return