Oscillating pressure sintering of W-Ni-Fe refractory alloy

被引：44

作者：

Gao, Ka ^{[1
]}

Xu, Yueyang ^{[1
]}

Tang, Gaopeng ^{[1
]}

Fan, Lei ^{[1
]}

Zhang, Rui ^{[1
]}

An, Linan ^{[2
]}

机构：

[1] Zhengzhou Univ Aeronaut, Sch Mat Sci & Engn, Zhengzhou 450015, Henan, Peoples R China

[2] Univ Cent Florida, Dept Mat Sci & Engn, Orlando, FL 32816 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 805卷 / 789-793期

关键词：

Oscillating pressure sintering; Refractory metals; Densification; Grain growth; Hardness; TUNGSTEN CONTENT; HEAVY ALLOY; MICROSTRUCTURE; DENSIFICATION; TEMPERATURE; CERAMICS; BEHAVIOR; METALS;

D O I：

10.1016/j.jallcom.2019.07.141

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, we report the fabrication of 90W-7Ni-3Fe refractory alloy using a novel oscillating pressure sintering (OPS) technique. The technique is similar to conventional hot pressing (HP), excepting that an oscillating pressure replaces the static pressure in HP. The results show that compared to HP, OPS can significantly improve the sintering ability of the alloy by decreasing the sintering temperature required for the densification of the alloy and inhibiting grain growth. The sample obtained at 1250 degrees C exhibits an HV hardness of 450 HV0.5, which is not only much higher than that for the HP prepared sample, but also much higher than materials with similar compositions ever reported. The results clearly demonstrate that OPS is a very promising technique for the fabrication of high performance refractory alloys. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：789 / 793

页数：5

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