Synthesis of nanocrystalline AZ31 magnesium alloy with titanium addition by mechanical milling
Synthesis of nanocrystalline AZ31 magnesium alloy with titanium addition by mechanical milling
复制标题
机械铣削合成钛添加纳米晶AZ31镁合金
DOI：
10.1016/j.matchar.2016.01.014
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发表时间：
2016-03
影响因子：
4.7
通讯作者：
Yu Huan
中科院分区：
文献类型：
--
作者：
Zhou Haiping;Hu Lianxi;Sun Yu;Zhang Hongbin;Duan Congwen;Yu Huan
采用机械研磨法制备了添加钛的纳米晶AZ 31镁合金。在球磨过程中，随着球磨时间的增加，AZ31镁合金基体的晶粒尺寸逐渐减小。球磨110 h后，Mg含量为18wt.和27重量% Ti的添加分别细化到86 nm和66 nm，导致形成纳米晶Mg基体显微组织。同时，随着球磨时间的延长，合金中Ti颗粒的尺寸也逐渐减小，Ti的弥散对Mg基体晶粒的细化起到了积极的作用。通过球磨110 h，添加18wt.%的Ti，可使AZ31镁合金中Ti颗粒的平均尺寸细化到1 μm以下Ti添加。机械球磨后，将球磨后的粉末冷压成绿色压坯，并通过维氏硬度和单轴压缩试验表征其力学性能。结果表明，机械球磨AZ31镁合金的显微硬度随球磨时间的延长而提高，Ti的加入量达到约147 Hv，这几乎是原始态AZ31镁合金的3倍。同时，机械球磨添加Ti的AZ31镁合金的屈服强度在室温和300 °C下分别高达293 MPa和60 MPa。
Mechanical milling was used to prepare nanocrystalline AZ31 magnesium (Mg) alloy with titanium (Ti) addition. During milling, the crystallite size of the AZ31 Mg matrix decreased steadily with the increase of milling time. After milling for 110 h, the crystallite size of the Mg phase of the alloy with 18 wt.% and 27 wt.% Ti additions was refined to 86 nm and 66 nm respectively, leading to the formation of a nanocrystalline Mg matrix microstructure. Meanwhile, the size of Ti particles added in the alloy also decreased gradually with the increase of milling time, and the Ti dispersions presented a positive effect on the refinement of the Mg matrix grains. By milling for 110 h, the average size of Ti particles was refined to less than 1 μm in the AZ31 Mg alloy with 18 wt.% Ti addition. After mechanical milling, the as-milled powders were cold pressed into green compacts, and the mechanical properties were characterized by Vickers' hardness and uni-axial compressive tests. It was found that the micro-hardness of mechanically milled AZ31 Mg alloy with 27 wt.% Ti addition reached about 147 Hv, which was almost three times larger than that of the as-received AZ31 Mg alloy. Meanwhile, the yield strength of mechanically milled Ti-added AZ31 Mg alloy was seen to be as high as 293 MPa at room temperature and 60 MPa at 300 °C, respectively.
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影响因子：
6.2
作者：
Candan, S.;Unal, M.;Candan, E.
通讯作者：
Candan, E.
DOI：
10.1016/j.msea.2006.11.095
发表时间：
2007-05-15
影响因子：
6.4
作者：
Fatemi-Varzaneh, S. M.;Zarei-Hanzaki, A.;Beladi, H.
通讯作者：
Beladi, H.
影响因子：
6
作者：
Zhan Zhang;A. Couture;A. Luo
通讯作者：
Zhan Zhang;A. Couture;A. Luo
DOI：
10.2174/1874088x01206010006
发表时间：
2012-02
期刊：
The Open Materials Science Journal
影响因子：
--
作者：
X. Ai;G. Quan
通讯作者：
X. Ai;G. Quan
DOI：
10.1016/j.msea.2006.12.132
发表时间：
2007-05
影响因子：
6.4
作者：
N. Balasubramani;A. Srinivasan;U. Pillai;B. C. Pai
通讯作者：
N. Balasubramani;A. Srinivasan;U. Pillai;B. C. Pai