Temper embrittlement in HAZ of Cr-Mo steel observed in SR-treated specimens
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The temper embrittlement occurred in the heat affected zones (HAZs) of Cr-Mo steels tempered at the temperature range of 775 to 900K. The first to the fourth types of embrittlement appeared in order with an increasing tempering time when the HAZ specimen were tempered directly. The effect of SR treatment on temper embrittlement arising in HAZ of 2 1/4Cr-1Mo steel was investigated. The temper embrittlement was detected as the rise of the transition temperature, vTr30, The first type of embrittlement disappeared completely and the second type did partially after SR treatment. The third type of embrittlement, which was typical intergranular type embrittlement, arose as well after SR treatment. This type was induced by the segregation of phosphorus in the prior-austenite grain boundary. The fourth type arose a little after the SR treatment. It was induced by the growth of carbide particles.
- Faculty of Engineering, Mie Universityの論文
- 2001-12-27
Faculty of Engineering, Mie University | 論文
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