Evaluation of Deformation-Induced Martensite Phase in Austenitic Stainless Steel Using Magnetic Minor Hysteresis Loops

被引：0
|
作者：
Kobayashi, Satoru [1 ]
Saito, Atsushi [1 ]
Kikuchi, Nobuhiro [1 ]
Takahashi, Seiki [1 ]
Kamada, Yasuhiro [1 ]
Kikuchi, Hiroaki [1 ]
Ara, Katsuyuki [1 ]
机构：
[1] Iwate Univ, NDE & Sci Res Ctr, Fac Engn, 4-3-5 Ueda, Morioka, Iwate 0208551, Japan
来源：
ELECTROMAGNETIC NONDESTRUCTIVE EVALUATION (XII) | 2009年 / 32卷
关键词：
304 stainless steel; magnetic hysteresis; minor loop; martensite; nondestructive testing; FERROMAGNETIC PROPERTIES; TENSILE DEFORMATION; ALPHA'-MARTENSITE; TRANSFORMATION; TEMPERATURE; 304-STAINLESS-STEEL;
D O I：
10.3233/978-1-60750-023-0-247
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Scaling power-law rules in magnetic minor hysteresis loops for deformed SUS304 stainless steels have been examined in order to characterize ferromagnetic alpha' martensites embedded in a paramagnetic austenitic matrix. The scaling power law between the hysteresis loss and remanence is found to be universal, being independent of volume fraction of strain-induced alpha' martensites. A coefficient of the power law largely decreases with volume fraction, reflecting a change in the size and morphology of martensites. The present method is highly effective for integrity assessment of austenitic stainless steels because of the sensitivity and low measurement field, typically less than 4kA/m.
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收藏
页码：247 / 254
页数：8
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