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Thermal Shock Properties of Ternary-Boride-Based Cladding Material

Journal Key Engineering Materials (Volumes 353 - 358)
Volume Progresses in Fracture and Strength of Materials and Structures
Edited by Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages 58-61
DOI 10.4028/www.scientific.net/KEM.353-358.58
Citation Y.G. Wang et al., 2007, Key Engineering Materials, 353-358, 58
Online since September, 2007
Authors Y.G. Wang, Zhao Qian Li, Ming Chen
Keywords Cladding Materials, Interface, Microstructure, Thermal Shock
Abstract

Thermal shock properties of Q235A steel used ternary-boride-based (TBB) cladding material has been studied. The result indicates that this cladding material has excellent resistance to thermal shock and that the cracks are not difficult to occur at the interface of cladding layer and steel substrate. The mechanism of thermal shock failure is fatigue failure brought by cycle stresses. The thermal shock has little influence on the hardness of cladding layer. The structure of cladding layer has no obvious change after the thermal shock, but the phase of steel substrate change from ferrite and pearlite to martensite.

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