摘要
通过对Cu-14.0wt%Al-7.5wt%Mn合金样品在900℃真空环境下进行不同时间的退火热处理后,利用化学成分分析、扫描电镜、金相显微镜观察以及X射线衍射分析等方法对该合金进行了微观组织结构分析,对其进行了硬度测量,并利用测量低温电阻的方法测量了样品的马氏体相变温度。结果表明,随着热处理时间的延长,合金中的Mn挥发的越多,从而使合金的马氏体相变点有所升高。因此,可以通过掌握热处理过程中Mn的挥发规律,进而控制Cu-Al-Mn合金中Mn的含量,以准确调节该合金马氏体相变温度。
The microstructure of Cu-14.0wt%Al-7.5wt%Mn alloys after annealing at 900℃ for different time was investigated by means of chemical composition analysis,SEM,optical microscope（OM） and X-ray diffraction.The electrical resistance and hardness of the alloy were measured.The results show that volatilization of Mn from the alloy increases with increasing the time of heat treatment,which results in the decreasing of Ms temperature of the alloy.So the amount of Mn in Cu-Al-Mn alloy can be adjusted by volatilization of Mn during heat-treatment and then Ms temperature of the alloy is controlled exactly.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2008年第2期22-25,共4页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金资助(59895150)
