Microstructures and properties of CuZrAl and CuZrAlTi medium entropy alloys prepared by mechanical alloying and spark plasma sintering

被引：6

作者：

Ge, Wen-juan ^{[1
]}

Li, Xu-ting ^{[1
]}

Li, Peng ^{[1
]}

Qiao, Peng-chao ^{[1
]}

Du, Jian-wei ^{[1
]}

Xu, Shuai ^{[1
]}

Wang, Yan ^{[1
]}

机构：

[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2017年 / 24卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Medium entropy alloys; Mechanical alloying; Spark plasma sintering; Microstructure; Corrosion resistance; GLASS-FORMING ABILITY; METALLIC GLASSES; BEHAVIOR; TI; SIZE; NB;

D O I：

10.1016/S1006-706X(17)30068-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Equiatomic CuZrAI and CuZrAITi medium entropy alloys were designed and synthesized by mechanical alloying and spark plasma sintering technique. The alloying behavior, phase evolutions, microstructures and properties of samples were investigated by X-ray diffraction, differential scanning calorimetry, field emission scanning electron microscopy, microscopy/Vickers hardness testing and electrochemical polarization measurement. The results indicate that the final products of as-milled alloys consist of amorphous phases. Ti addition improves the glass forming ability of as-milled alloys. The as-sintered CuZrAI alloy contains face-centered cubic (fcc) solid solution, Ali(1.03)Cuo(0,3)Zr and AlZ(r2) phases at different sintering temperatures. With Ti addition, the as-sintered sample is only composed of intermetallics at 690 degrees C, while feel, fcc2 and CuTi3 phases are formed at 1100 V. CuZrAlTi-1100 V alloy exhibits the highest hardness value of 1173 HVD. 2 owing to the high sintering density, solid solution strengthening and homogeneous precipitation of nano size crystalline phase. CuZrAlTi-690 V alloy presents a similar corrosion resistance with 304L stainless steel in seawater solution and further possesses the lower corrosion rate.

引用

页码：448 / 454

页数：7

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