Evaluation of Creep Damage and Fracture in High Cr Steel Welds
Creep strength of high Cr ferritic steel welds decreases than base metals due to Type-IV creep damages formed in the heat affected zone (HAZ) during long-term use at elevated temperatures.In the present study,microstructural changes and damage evolution behaviors in HAZ during creep were investigated for the ASME Gr.91 and Gr.122 steel weld joints.Creep voids formed at an early stage of life and coalesced to form a macro crack at 0.8 of life for the Gr.91 steel weld.
High Cr ferritic steel Welded joint Creep Type-IV creep damage EBSD
Masaaki Tabuchi
National Institute for Materials Science,Tsukuba Science City 305-0047,Japan
国际会议
北京
英文
1-7
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）