环境磁场对20钢应力-磁效应的影响  

INFLUENCES OF ENVIRONMENT MAGNETIC FIELD ON STRESS-MAGNETISM EFFECT FOR 20 STEEL FERROMAGNETIC ITEMS

作　　者：任尚坤[1] 杨雅玲[1] 林天华[1] 任吉林[1] 

机构地区：[1]南昌航空大学无损检测技术教育部重点试验室,南昌330063

出　　处：《理化检验（物理分册）》2008年第8期401-404,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

基　　金：航空科学基金(06ZF560009)

摘　　要：应力的磁效应是磁记忆检测技术的理论基础,也是探讨相关机理问题的关键所在。测量了在不同环境磁场条件下,20钢试样的磁化状态随拉应力的变化规律。结果发现,环境磁场对力-磁效应的关系规律具有明显的影响,磁记忆检测技术的定量评价体系与地磁场有关。Stress-magnetism effect is elementary theory of metal magnetic memory testing technology, and is also key problem to probe related mechanism essence. Curves of magnetizing status versus stress at different environment magnetic field were measured for 20 steel ferromagnetic items. It were founds that influences of environment magnetic field on stress-magnetism effect were very obvious. It shows that estimating system in quantify of metal magnetic memory testing technology is involved in geomagnetic field.

关 键 词：地磁场 力-磁效应 铁磁试样 金属磁记忆 

分 类 号：TG115.28[金属学及工艺—物理冶金]