Structure and Properties of W-Ni-Fe-Co Heavy Alloys Compacted from Nanopowders

被引：14

作者：

Povarova, K. B. ^{[1
]}

Alymov, M. I. ^{[1
]}

Gavrilin, O. S. ^{[2
]}

Drozdov, A. A. ^{[1
]}

Kachnov, A. I. ^{[2
]}

Korenovskii, N. L. ^{[1
]}

Bannykh, I. O. ^{[1
]}

机构：

[1] Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119911, Russia

[2] FGUP GNPP Temp, Moscow, Russia

来源：

RUSSIAN METALLURGY | 2008年 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S0036029508010102

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Heavy tungsten alloy (HTA) W-Ni-Fe-Co nanopowders synthesized by a chemical-metallurgical method are used to produce a compacted material with a theoretical density and a grain size of 2.9-4.6 mu m. Upon solid-phase sintering (SPS) at 1350-1450 degrees C, the binder composition of the produced material coincides with the binder composition of the alloy fabricated by liquid-phase sintering (LPS) according to a traditional technology. The hardness of the material is 4400-3400 MPa (as compared to 1750 +/- 50 and 2950 +/- 50 MPa after LPS followed by a hardening treatment for a standard HTA), and its ultimate tensile strength after SPS is 950-1050 MPa (as in the case of the standard alloy after LPS). The melting temperature of the binder is 25-30 degrees C lower than that of the traditional alloy.

引用

页码：52 / 55

页数：4

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