摘要
通过温度、应变速率对95W-5(Ni/Fe/Co)合金流变应力曲线的影响,分析了该合金的变形特点.结果表明:该合金在200℃～600℃温度范围内变形时,初始加工硬化十分显著.宏观上表现为合金的屈服强度较高.95W-5(Ni/Fe/Co)合金在700℃～1300℃的流变应力曲线有一明显的特点就是曲线的斜率变小,而且出现短暂稳定态的流动.这是由于粘结相发生动态回复的结果.此外该合金的高温塑性亦随应变速率的增大而增加.扫描电镜分析结果从微观上验证了该合金高温塑性变化的原因.
The deformation characteristic at high temperature were analysed after studied the influence of temperature and strain rate on flow stress curve of 95W-5（Ni/Fe/Co） alloy. The results show that early working hardening is quite obvious for the alloy when deformation happened at 200℃～600℃, and the yield strength of the alloy is higher. A characteristic of flow stress curves of 95W-5（Ni/Fe/Co） alloy at 700℃～1300℃ is that the slope became smaller and a unabiding stabilization appear. That is due to dynamic recovery occured in binding phase. Moreover, the high temperature plasticity increase with the strain rate. Analysis results by SEM validate the change reason of the high temperature plasticity.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2005年第8期1247-1250,共4页
Rare Metal Materials and Engineering
基金
"十五"国防科学技术预研重点项目资助(资助号1.3.1.5)
