Paper Title:
Thermal Shock Cracks Initiation and Propagation of WCp / Steel Substrate Surface Composite at 500°C
  Abstract

In order to provide a theoretical basis for the study of thermal fatigue properties on surface composites, thermal shock cracks initiation and propagation of WCP reinforced high chromium steel substrate surface composites were studied by thermal shock test method at 500 °C. The results show that cracks initiation and propagation begin within a few thermal shock cycles, and after 15 thermal shock cycles, the composites remain intact, indicating a good thermal shock resistance. The thermal shock cracks consist mainly of longitudinal and transverse cracks. Within a few thermal shock cycles, the initiation and propagation of longitudinal cracks play a dominant role; however, with the increase in the number of thermal shock, the transverse cracks may play a key role as the length and number of both types of cracks increases. However, the increase is slow. The longitudinal cracks are mainly caused by the first class thermal stress and the transverse cracks result from the culminant effects of the first and second thermal stress, interacting with each other.

  Info
Periodical
Chapter
Chapter 3: Mechanics of Materials
Edited by
Yongping Zhang, Linhua Zhou and Elwin Mao
Pages
253-260
DOI
10.4028/www.scientific.net/AMM.109.253
Citation
R. Q. Huang, Z. L. Li, Y. H. Jiang, R. Zhou, F. Gao, "Thermal Shock Cracks Initiation and Propagation of WCp / Steel Substrate Surface Composite at 500°C", Applied Mechanics and Materials, Vol. 109, pp. 253-260, 2012
Online since
October 2011
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$32.00
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