摘要
对两种典型失效形式的汽车制动鼓化学成分、显微组织和硬度等进行了检验和分析。结果表明,制动鼓表面出现的亮白点是成分不合理和制动时摩擦热作用引起相变等导致的,致使制动效果差;而制动鼓表面出现黑斑、龟裂是由于耐热疲劳性能差及发生相变造成的。
In this paper, composition, microstructure and hardness testing were carried out with the two typical failed automobile brake drum. The results show that the failure of the brake drum with bright spots is the result of improper composition and phase transformation by frictional heat, the failure of the drum with black spot and chap is that insufficient property of thermal fatigue resistance and phase transformation lead to the crack on braking band.
出处
《理化检验（物理分册）》
CAS
2004年第10期517-519,524,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
基金
安徽省重点科研项目(03022003)
合肥工业大学校基金(030303F)
关键词
制动鼓
失效分析
白亮点
黑斑
龟裂
Brake drum
Failure analysis
Bright spot
Black spot
Chap
