Effects of Dy, Sr and Die Casting on Microstructure, Mechanical and Corrosion Properties of Mg-Dy-Sr-Nd-Zr Alloys
Effects of Dy, Sr and Die Casting on Microstructure, Mechanical and Corrosion Properties of Mg-Dy-Sr-Nd-Zr Alloys
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Dy、Sr 和压铸对 Mg-Dy-Sr-Nd-Zr 合金显微组织、力学和腐蚀性能的影响
DOI：
10.1007/s11665-017-2850-0
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发表时间：
2017-08
影响因子：
2.3
通讯作者：
Ding Yutian
中科院分区：
文献类型：
--
作者：
Liu Dexue;Yin Xunyan;Pang Xin;Hu Shiwen;Ding Yutian
通过添加2、6和10重量% Dy和0.5、1.5和2重量%通过对Mg-2. 4 Nd-0. 5 Zr合金中添加微量元素Sr，并采用压铸工艺制备医用Mg-10 Dy-0. 5Sr-2. 4 Nd-0. 5 Zr合金，研究了Dy、Sr元素及压铸工艺对Mg-Dy-Sr-Nd-Zr合金显微组织、力学性能和耐蚀性的影响。设计了新型医用Mg-10 Dy-0.5Sr-2.4Nd-0.5Zr合金，铸态晶粒尺寸细化到70 μm左右，且分布均匀。合金的抗拉强度随Dy含量的增加而增加，随Sr含量的降低而降低。腐蚀速率随Dy含量的增加先减小后增大，随Sr含量的增加而减小。通过调整Sr和Dy的含量，铸态Mg-10 Dy-0.5Sr-2.4Nd-0.5Zr合金的抗拉强度提高到203 MPa，延伸率为7.4%，腐蚀速率降低到0.48mm/a。采用压铸工艺制备的新型生物医用合金，其延伸率提高到10.2%，组织细化到18 μm左右，抗拉强度降低到180 MPa，腐蚀速率为1.29 mm/a。
By adding 2, 6 and 10 wt.% Dy and 0.5, 1.5 and 2 wt.% Sr elements to Mg-2.4Nd-0.5Zr alloys and adopting die-casting process for biomedical Mg-10Dy-0.5Sr-2.4Nd-0.5Zr alloys, the effects of Dy and Sr elements and die-casting process on the microstructure, mechanical properties and corrosion resistance of Mg-Dy-Sr-Nd-Zr alloys were investigated. The new biomedical Mg-10Dy-0.5Sr-2.4Nd-0.5Zr alloys were designed, and the grain size of the as-cast new alloy was refined to ~70 μm and distributed equably. The ultimate tensile strength increased with increasing Dy content and decreasing Sr content. The corrosion rate decreased firstly and then increased with increasing Dy content and decreased with increasing Sr content. By adjusting the content of Sr and Dy, the ultimate tensile strength of as-cast new Mg-10Dy-0.5Sr-2.4Nd-0.5Zr alloys increased to 203 MPa, elongation was 7.4%, and the corrosion rate decreased to 0.48 mm/a. The elongation rate increased to 10.2% after the new biomedical alloys were processed by die casting with an refine-grained microstructure of ~18 μm, meanwhile the ultimate tensile strength decreased to 180 MPa, and the corrosion rate was 1.29 mm/a.
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影响因子：
3.6
作者：
M. Furukawa;Z. Horita;T. Langdon
通讯作者：
M. Furukawa;Z. Horita;T. Langdon
影响因子：
3
作者：
Xiaobo Zhang;G. Yuan;L. Mao;Jialin Niu;W. Ding
通讯作者：
Xiaobo Zhang;G. Yuan;L. Mao;Jialin Niu;W. Ding
影响因子：
3.6
作者：
Beygelzimer, Yan;Estrin, Yuri;Kulagin, Roman
通讯作者：
Kulagin, Roman
DOI：
10.1016/j.msea.2014.12.003
发表时间：
2015-02
影响因子：
6.4
作者：
Y. Wan;Shu-nong Jiang;Chuming Liu;B. Wang;Zhiyong Chen
通讯作者：
Y. Wan;Shu-nong Jiang;Chuming Liu;B. Wang;Zhiyong Chen
影响因子：
3.5
作者：
Lee, Ji-Young;Han, Gilsoo;Yang, Seok-Jo
通讯作者：
Yang, Seok-Jo