Evaluation for Toughness Degradation of 2.25Cr-1Mo Steel Using Magnetic Property Measurement Method

Author(s):  
Seung Hoon Nahm ◽  
Jong Seo Park ◽  
In Hyun Chung ◽  
Kwon Sang Ryu ◽  
Am Kee Kim
2006 ◽  
Vol 324-325 ◽  
pp. 1253-1256
Author(s):  
C.S. Kim ◽  
J.H. Kang ◽  
Jai Won Byeon ◽  
S.I. Kwun

The magnetic coercivity of ferritic 12Cr steel was experimentally studied in order to characterize its microstructures and mechanical properties during isothermal aging. As the aging time increased, the M23C6 carbide coarsened and additional precipitation of Fe2W phase was induced. The width of martensite lath increased to about 0.4μm after 4000 hrs of aging. The coercivity decreased as the number of precipitate decreased and the width of martensite lath increased. The hardness was proportional to the magnetic coercivity. These empirical linear relations suggested that the change in the microstructures and strength of ferritic 12Cr steel during thermal aging could be evaluated by monitoring the magnetic coercivity.


2001 ◽  
Vol 44 (3) ◽  
pp. 423-427 ◽  
Author(s):  
Haengjin Ko ◽  
K.T Hong ◽  
M.J Kaufman ◽  
Kyung Sub Lee

2020 ◽  
Vol 69 (3) ◽  
pp. 836-844 ◽  
Author(s):  
Carlo Guarnieri Calo Carducci ◽  
Attilio Di Nisio ◽  
Filippo Attivissimo ◽  
Amerigo Trotta

2014 ◽  
Vol 602-605 ◽  
pp. 2721-2725
Author(s):  
Qin Lan Zhang ◽  
Zhi Yong Lu ◽  
Xiang Liu

There are different magnetic property of materials mixed in the mechanical wear of abrasive and powder processing. Depending on different alloy and magnetized material with different magnetic saturation characteristics, some substances reach the magnetic saturation in the magnetization processing soon, while some substances must be in a strong magnetic field to reach saturation, resulting in the magnetic property of combination material mixed with multi-component metal abrasive has multi-ingredient combination characteristics. Based on the PQ excitation measurement method, we analyze the magnetic property between the typical magnetic abrasive individual and combinations. We also build the magnetic spectral characteristics of the mixture which is made up of materials with different magnetic property, and finish the establishment of two mixtures mapping. This paper aims to explore the magnetic spectral analysis method of ferromagnetic mixture from the theory and experiment, and propose the magnetic spectrum analysis and calculation method of the mixture.


2016 ◽  
Vol 52 (5) ◽  
pp. 1-4 ◽  
Author(s):  
Ryu Watakabe ◽  
Masaya Tanaka ◽  
Yasuhito Takahashi ◽  
Koji Fujiwara ◽  
Yoshiyuki Ishihara ◽  
...  

2013 ◽  
Vol 113 (17) ◽  
pp. 17A919 ◽  
Author(s):  
Jianbin Zeng ◽  
Youguang Guo ◽  
Yancheng Li ◽  
Jianguo Zhu ◽  
Jianchun Li

2011 ◽  
Vol 170 ◽  
pp. 92-96 ◽  
Author(s):  
Yoshihisa Miyata ◽  
Koya Hayashi ◽  
Genta Sakane ◽  
Takaaki Arimoto ◽  
Yasuhiro Katayama ◽  
...  

A large defective troilite (Fe0.9V0.1)0.82S is prepared by a sealed silica-tube method at 800oC and characterized by a powder X-ray diffraction method and using a magnetic property measurement system. The crystal structures of a defective troilite and non defective troilite are analyzed by Rietveld method. The large defect enhances the Fe-Fe pairing and suppresses the waving of Fe-chain along c-direction. The antiferromagnetic property is observed on both troilites. The spin-flip transition temperature of the large defective troilite is 9K.


Sign in / Sign up

Export Citation Format

Share Document