简介概要

P/M钢-氧化铝合金加工硬化特征的探讨

来源期刊:中南大学学报(自然科学版)1987年第3期

论文作者:张吟秋 雷长明

文章页码:281 - 287

关键词:粉末冶金制品; 铜基合金; 含氧化铝合金; 弥散强化合金; 加工硬化; 强度

Key words:powder metallurgy product; copper-base alioys; aluminum oxide containing alloys; dispersion strengthened alloys

摘    要:本文以冷加工和退火两种状态的铜-氧化铝合金圆棒,在电子拉伸机上,测绘P-ΔL曲线,探讨该合金的加工硬化特征。讨论了拉伸速度和合金成分对合金机械性能的影响。用第一类加工硬化曲线作图法测量了合金加工硬化指数,并与变形抗力法进行了比较。研究结果表明,该合金的加工硬化程度随应变速率增加而增加,并受合金成分的影响。同时,屈服强度相应提高。

Abstract: This paper deals with the work-hardening behaviour of Cu-Al2O3 alloy rod in the cold-worked and annealed states, giving the P-△L curve obtained on electlical tension test device, discussing the influence of tension rate and alloy composition on the behavioar, measuring the work-hardening exponent by using the first work-hardening curve and comparing with the deformation resistance method. Results show that as the strain rate increases, the work-hardening degree and yield strength become larger, and both properties are effected by the chemical composition.



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