The Paton Welding Journal, 2008, №11

2008 №11 (19)

2008 №11 (21)

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The Paton Welding Journal, 2008, #11, 136-140 pages

New developments to overcome cold cracking in welded martensitic creep-resistant steels

P. Mayr, H. Cerjak

Institute for Materials Science and Welding, Graz University of Technology, Graz, Austria

Abstract
HAZ of a new steel grade of the system 9Cr-3W-3Co-V-Nb with controlled adding of boron and nitrogen was investigated using physical simulation of a weld. After the complete thermal cycle of welding the size of grains of primary austenite and structure of lath martensite are identical to those in initial state. The suppression of fine-grained HAZ formation shows high potential of a new steel as for the reduce of tendency of joints towards cold cracks formation.
Keywords: martensitic steels, creep damage, cold cracking

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Suggested Citation

P. Mayr, H. Cerjak (2008) New developments to overcome cold cracking in welded martensitic creep-resistant steels. The Paton Welding J., 11, 136-140.

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