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Effect of Minor Compressive Deformation in Austenite on Martensitic Transformation in Modified 9-12%Cr Ferritic Steel

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Abstract:

A modified high Cr ferritic heat-resistant steel was developed and subjected to the thermomechanical treatment. The effect of applied stress and temperature on martensitic transformation and microstructure was studied by using high-resolution differential dilatometer and optical microscope. Applied stress raises the amount of defection as dislocation and grain boundary defects, thus elevate Ms. Applied stress also lead to the increase of transformation time due to the mechanical stabilization of austenite. Increase of applied stress or temperature would enhance these above effects.

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Periodical:

Advanced Materials Research (Volumes 299-300)

Pages:

61-64

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.299-300.61

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Online since:

July 2011

Authors:

Chen Xi Liu, Yong Chang Liu, Dan Tian Zhang, Zhi Zhong Dong, Bao Qun Ning, Ze Sheng Yan

Keywords:

Dilatometer, Ferritic Heat Resistant Steel, Martensitic Transformation (MT), Thermomechanical Treatment (TMT)

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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