Analysis and research on crack of 347H stainless steel welded joint after heat treatment
The weld of 347H stainless steel is easy to produce crack after stabilization and solution heat treat-ment,which increases the cost of the equipment and prolongs the manufacturing cycle.The nickel base welding mate-rial has the advantages of strong corrosion resistance and good creep resistance.In this paper,the microstructural properties and corrosion resistance of 347H stainless steel and nickel-base welded joints under different heat treat-ment were studied,the experimental results show that the ni-based electrode welding method can effectively avoid the cracking of 347H stainless steel welded joint after stabilization or solid solution heat treatment,by which the problem of cracking of austenitic stainless steel after heat treatment was solved,providing a good reference for practical pro-duction.
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