摘要
为研究低碳钢拉伸磁记忆信号的屈服特性,以20g为研究对象,采用电测法和金属磁记忆检测法实现了单点的磁记忆信号变化规律研究,首次实现了磁信号与屈服对应关系的研究。结果表明:拉伸磁记忆信号对局部屈服的位置十分敏感,磁畸变是局部屈服发生的直接表征和独有现象,二者具有一一对应的关系;金属磁记忆检测法对诊断屈服具有独特的诊断功效,该结论对诊断工程屈服问题具有重大意义。
The electrometric and metal magnetic memory methods were performed on plate 20g base metal specimen to study the yield effect of magnetic signals under static tensile test. The research and analysis were performed on both magnetic signals change law of a point and the corresponding relation between yield and magnetic signals for the first time. The results show that the magnetic signal is sensitive to local yielding location. The magnetic distortion is the direct characterization and unique phenomenon of local yielding. There is a one to one corresponding relationship between local yield and distortion. The metal magnetic memory method has unique efficiency to diagnose local yield, which has a great significance to diagnosing problem of engineering local yield by using MMM technique.
出处
《热加工工艺》
CSCD
北大核心
2015年第2期69-72,共4页
Hot Working Technology
基金
安徽高校省级自然科学研究项目(KJ2013B084)
安徽科技学院青年基金项目(ZRC2013336)
安徽科技学院自然科学研究项目(ZRC2013384)
关键词
金属磁记忆
低碳钢
静载拉伸
屈服特性
屈服应变
metal magnetic memory
low carbon steel
static tension
yield effect
yield strain
