Improvement of elevated temperature mechanical properties of Cu-Ni-Sn-Pb alloys

被引：9

作者：

Empl, D. ^{[1
]}

Laporte, V. ^{[1
]}

Vincent, E. ^{[2
]}

Dewobroto, N. ^{[2
]}

Mortensen, A. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Mat, Stn 12, Lab Mech Met, CH-1015 Lausanne, Switzerland

[2] Swissmet Ind Ltd, CH-4143 Dornach 1, Switzerland

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 16-17期

关键词：

Non-ferrous alloys; Phase transformation; Copper; Warm-shortness; COPPER-CHROMIUM ALLOYS; DYNAMIC EMBRITTLEMENT; GRAIN-BOUNDARY; HOT DUCTILITY; INTERGRANULAR FRACTURE; NICKEL-ALLOYS; LIQUID-METAL; BASE ALLOYS; PHOSPHORUS; ZIRCONIUM;

D O I：

10.1016/j.msea.2010.03.056

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Cu-Ni-Sn alloys with Pb additions exhibit high mechanical strength at room temperature coupled with good machinability but experience a significant ductility loss above the melting point of lead. We explore here the influence of minor additions of Al, Mn, Zr, B or P to the copper alloy CuNi9Sn6Pb1 on its tensile properties at 400 degrees C and 10(-2) s(-1). Only boron and phosphorous additions have a clear beneficial effect. Unlike other elements tested, these form intermetallic particles; it is proposed that the improvement results from a combination of capillary pinning and mechanical shielding by these particles of the molten lead inclusions in the alloy. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：4326 / 4333

页数：8