Evaluation of post weld heat treatment quality of modified 9Cr–1Mo (P91) steel weld by magnetic coercive force measurements
作者： V. Sudharsanam , V. Senthilkumar , N. Raju , R. Vetriselvan
DOI: 10.1016/J.ACME.2015.05.006
关键词:
摘要: Abstract This paper presents a novel technique for evaluation of quality post weld heat treatment (PWHT) modified 9Cr–1Mo (P91) steel by correlation with its magnetic coercive force (MCF). The MCF was studied in respect different PWHT cycles involving ordered variations soaking temperature unto 770 °C and time 140 min. It observed that the metal reduced increase both PWHT. drop welds after found to be dependent on hardness degree carbide precipitations seen microstructure. Based study, criterion evolved weld.
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