摘要
使用Ｇｌｅｅｂｌｅ １５００热力模拟实验系统研究了 Ｈ６２黄铜试件在不同温升率及不同预载应力下的失效温度与破坏规律，结合试件断口附近的金相显微组织观察，分析了材料的破坏机理．结果表明，温升率及预载应力对Ｈ６２ 黄铜的失效温度及破坏有明显影响．在相同的预载应力下，温升率越高材料的失效温度越低 在相同的温升率下，预载应力越高材料的失效温度也越低．对材料微观组织及缺陷的分析表明。
The response and failure of H62 brass specimens subjected to different levels of pre-stress and heating rates were systematically investigated using a Gleeeble-1500 thermal-mechanical material testing system. The metallurgraph near fracture of the tested material were also observed and analyzed. Experimental results show that the increase of either pre-stress or heating-rate decreases the failure temperature, which is related with obvious increase of microdefects in the pre-load material, Metallurgraphic analysis also shows that high heating rate may remarkably increase the damage of the material.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第12期1256-1260,共5页
Acta Metallurgica Sinica
基金
国家自然科学基金19672059
中国工程物理研究院基金98030412项目资助
关键词
黄铜
预载
温升率
失效温度
H62 brass
preloading
heating rate
failure temperature
