Abstract:In order to obtain theory basis for heat-treatment of finished tubes, the effects of solution heat-treatment on precipitate behavior of MX phase containing Nb in S30432 austenitic heat-resistant steel were studied. The two chemical compositions of S30432 steel tubes have different heat-treatments,respectively. The microstructure was observed by optical microscope,and MX-type precipitates bearing Nb were analyzed by chemical phase analysis method. The effects of heat treatment,solution temperature and holding time on precipitation behavior were investigated. Based on the results,the effect of solution heat treatment on the Nb bearing precipitates was summarized in S30432 steel.
收稿日期: 2017-10-13
出版日期: 2018-05-11
引用本文:
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