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Microstructure of 9%Cr-Mo-Co-B Steel Welds by claude.bouillot3566 is a document available to read on EtoBox.
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The document summarizes research on the microstructure and fracture behavior of welded 9%Cr-Mo-Co-B (CB2) steel after post-weld heat treatment and isothermal aging. Key findings include: 1) The as-received microstructure consisted of tempered martensite with M23C6 and MX precipitates. Aging led to growth of these particles and precipitation of Laves phase particles at prior austenite boundaries. 2) Boron nitride particles were observed on fracture surfaces, growing near inclusions. 3) Hardness decrease
- Author
- claude.bouillot3566
- Language
- EN