Microstructure evolution and mechanical properties of directionally solidified Mg-xGd (x=0.8, 1.5, and 2.5) alloys
Microstructure evolution and mechanical properties of directionally solidified Mg-xGd (x=0.8, 1.5, and 2.5) alloys
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定向凝固Mg-xGd（x=0.8、1.5和2.5）合金的显微组织演变和力学性能
DOI：
10.1016/j.msea.2016.03.065
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发表时间：
2016-04
期刊：
影响因子：
6.4
通讯作者：
Jie, Wanqi
中科院分区：
文献类型：
--
作者：
Liu, Shaojun;Wang, Jiahe;Li, Jiehua;Jie, Wanqi
The microstructure evolution and mechanical properties of directionally solidified Mg-0.60, 1.38 and 2.35 wt% Gd alloys were investigated as a function of temperature gradients (G), growth rates (V), cooling rates (R) and solute (Gd) contents. A typical cellular microstructure with varied morphologies was observed in three different Mg-Gd alloys under steady states with three differentG(20, 25, and 30 K/mm) at the fixedV(10 µm/s) or with differentV(10–200 µm/s) at the fixedG(30 K/mm). The formation of cellular microstructure can be attributed to the combined effects of the lower solute content and the higher interfacial tension. The cellular spacing (λ) decreases not only with increasingGorV, but also with increasing Gd content for the fixedGandV. The measuredλvalues are in good agreement with Trivedi model and the previous experimental results. Meanwhile, the ultimate tensile strength of directionally solidified Mg-Gd alloys decreases with increasingλ, but it increases with increasing cooling rates. Furthermore, the relationship between the ultimate tensile strength, structure parameter and cooling rate was also discussed and compared with the previous experimental results.
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影响因子：
6
作者：
Zhan Zhang;A. Couture;A. Luo
通讯作者：
Zhan Zhang;A. Couture;A. Luo
DOI：
10.1007/s40195-014-0151-2
发表时间：
2014-10
期刊：
Acta Metallurgica Sinica (English Letters)
影响因子：
--
作者：
Shaojun Liu;Guangyu Yang;W. Jie
通讯作者：
Shaojun Liu;Guangyu Yang;W. Jie
稀土元素Gd和Y对镁合金固溶强化的影响
影响因子：
6.2
作者：
Gao, L.;Chen, R. S.;Han, E. H.
通讯作者：
Han, E. H.
DOI：
10.1007/s11661-012-1159-8
发表时间：
2012-05
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
Xingwei Zheng;A. Luo;Chuan Zhang;Jie Dong;R. Waldo
通讯作者：
Xingwei Zheng;A. Luo;Chuan Zhang;Jie Dong;R. Waldo
影响因子：
4.5
作者：
N. Tunca;R. Smith
通讯作者：
N. Tunca;R. Smith