On the Elevated Temperature, Tensile Properties of Al-Cu Cast Alloys: Role of Heat Treatment

被引：6

作者：

Girgis, A. ^{[1
]}

Samuel, A. M. ^{[1
]}

Doty, H. W. ^{[2
]}

Valtierra, S. ^{[3
]}

Samuel, F. H. ^{[1
]}

机构：

[1] Univ Quebec Chicoutimi, Dept Sci Appl, Chicoutimi, PQ, Canada

[2] Gen Motors Mat Engn, 823 Joslyn Ave, Pontiac, MI 48340 USA

[3] Nemak SA, POB 100, Garza Garcia 66221, NL, Mexico

来源：

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING | 2019年 / 2019卷

关键词：

MG-SI ALLOYS; HARDENING BEHAVIOR; AGING BEHAVIOR; QUALITY INDEX; PRECIPITATION;

D O I：

10.1155/2019/8247914

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study aims to investigate the mechanical properties of a newly developed aluminum Al-6.5% Cu-based alloy, coded HT200, as well as to determine how these properties can be further improved using grain refinement and heat treatment. As a result, the effects of different heat treatments and alloying additions on the ambient and high-temperature tensile properties were examined. Three alloys were selected for this study: (i) the base HT200 alloy (coded A), (ii) the base HT200 alloy containing 0.15% Ti + 0.15% Zr (coded B), and (iii) the base HT200 alloy containing 0.15% Ti + 0.15% Zr + 0.5%Ag (coded C). The properties of the three HT200 alloys were compared with those of 319 and 356 alloys (coded D and E, respectively), subjected to the same heat treatment conditions. The results obtained show the optimum high-temperature tensile properties and Q-values for the five alloys of interest, along with the corresponding heat treatment conditions associated with these properties. It was found that the T6 heat-treated alloy B was the optimum alloy in terms of properties obtained, with values comparable to those of commercial B319.0 and A356.0 alloys.

引用

页数：15

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