Martensitic stainless steels have been widely used for line pipe application because of their high strength and excellent corrosion resistance in corrosive conditions. Reeling process has started to apply from economical view point. In this paper, effect of strain and aging on mechanical property and corrosion resistance of low C-13%Cr martensitic stainless steels weld joints are examined. Low C-13%Cr-2%Mo martensitic stainless steel was welded by TIG (Tungsten Inert Gas welding) using superduplex and duplex stainless steels wires. Increase of hardness was observed after strain and aging. No significant detrimental effects of strain and aging on mechanical property such as tensile, toughness and fracture toughness and SSC (Sulfide Stress corrosion Cracking) resistance were observed.

Subject
Materials, Fracture toughness, Welding, Girth welds, Tensile tests, Joints, Welded joints, Mechanical failure, Sulfide stress cracking, Hardness, Weld metal, Aging, Martensitic steel
Keywords:
Martensitic stainless steel, strain, aging, mechanical property, tensile test, toughness, fracture toughness, SSC resistance, girth weld joint
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2004
Association for Materials Protection and Performance (AMPP)
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