Experimental Research on The Microcosmic Mechanism of Stress-magnetic Effect For Magnetic Memory Testing
Influenced by the earth magnetic field, there will exist the irreversible reorientation of domain organization with the characteristic of magnetostriction in internal organization of the loaded ferromagnetic material. The different compressed loads are exerted onto the 20 steel and 40 steel specimens after annealling,which are then made into the metallographic observation test specimens. The magnetic domain structure is observed by the Bitter Method. Then compare the magnetic domain structure pictures of specimens with the same material and under different loads, and analyze different affections of different loads. The experimental results shows that in the occasion of no stress or less stress ,the lamellar domains appear in the area,and the domain walls are parallel to the same crystalline grain. The labyrinthian domains appear in company with the concentrated stress increasing,and the harder stress loads, the more labyrinthian domains appear. Meanwhile,the length and the distance between the domain walls change accordingly.
Metal magnetic memory Magnetic domain Labyrinthian domain Lamellar domain
Jilin Ren Chen Chen Kai Song Jihong Tang Shangkun REN
Key Laboratory of Nondestructive Test(Ministry of Education)NanChang Hangkong University,NanChang,China
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
2412-2418
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）