AN INVESTIGATION OF STRAIN-HARDENING AND CREEP IN AN AL-6061/AL2O3 METAL-MATRIX COMPOSITE

被引：26

作者：

FURUKAWA, M

WANG, JT

HORITA, Z

NEMOTO, M

MA, Y

LANGDON, TG

机构：

[1] XIAN INST MET & CONSTRUCT ENGN,DEPT MET,XIAN 710055,PEOPLES R CHINA

[2] KYUSHU UNIV,FAC ENGN,DEPT MAT SCI & ENGN,FUKUOKA 812,JAPAN

[3] UNIV SO CALIF,DEPT MAT SCI,LOS ANGELES,CA 90089

[4] UNIV SO CALIF,DEPT MECH ENGN,LOS ANGELES,CA 90089

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1995年 / 26卷 / 03期

关键词：

D O I：

10.1007/BF02663912

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experiments were conducted to compare the influence of temperature on the flow and strain-hardening characteristics of an Al-6061 metal matrix composite, reinforced with similar to 20 vol pet of Al2O3-based microspheres, with the unreinforced monolithic alloy. At room temperature, the yield stresses and the strain-hardening rates are higher in the composite material in the as-quenched condition and after aging at 448 K for periods of time up to 300 hours. The 0.2 pct proof stress and the strain-hardening rate decrease with increasing temperature in both materials, but the rate of decrease is faster in the composite so that the unreinforced monolithic alloy exhibits higher yield stresses and strain-hardening rates at temperatures in the vicinity of 600 K. Under conditions of constant stress at high temperatures, the composite exhibits both a higher creep strength than the monolithic alloy and higher values for the stress exponents for creep.

引用

页码：633 / 639

页数：7

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