Thermal Fatigue Mechanism of Welding Deposited Metal of Dies Steels

This paper conducted the outer constraint test of Coffin thermal fatigue and studied the deformation behaviors of microstructure for two kinds of welding deposited metals, they are 3Cr2W8 and HM3. The experimental results show that the thermal fatigue deformation belongs to multiple slip systems and...

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Bibliographic Details
Published in:Key engineering materials 2007-09, Vol.353-358, p.2053-2056
Main Authors: Liu, Ren Pei, Wei, Yan Hong, Chen, Wen Hua
Format: Article
Language:English
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Summary:This paper conducted the outer constraint test of Coffin thermal fatigue and studied the deformation behaviors of microstructure for two kinds of welding deposited metals, they are 3Cr2W8 and HM3. The experimental results show that the thermal fatigue deformation belongs to multiple slip systems and the heterogeneous deformation mainly concentrates around the second phase particles. Moreover, it is found that the cracking initiation relates to the separation between the second phase particles and base body, void and micro-cracking formation.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.353-358.2053