Fatigue Crack Growth Behavior of Gas Metal Arc Welded AISI 409 Grade Ferritic Stainless Steel Joints

被引:0
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作者
A.K. Lakshminarayanan
K. Shanmugam
V. Balasubramanian
机构
[1] Centre for Materials Joining & Research (CEMAJOR),Department of Manufacturing Engineering
[2] Annamalai University,undefined
关键词
duplex stainless steel; fatigue crack growth behavior; ferritic stainless steel; gas metal arc welding; tensile properties;
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学科分类号
摘要
The effect of filler metals such as austenitic stainless steel, ferritic stainless steel, and duplex stainless steel on fatigue crack growth behavior of the gas metal arc welded ferritic stainless steel joints was investigated. Rolled plates of 4 mm thickness were used as the base material for preparing single ‘V’ butt welded joints. Center cracked tensile specimens were prepared to evaluate fatigue crack growth behavior. Servo hydraulic controlled fatigue testing machine with a capacity of 100 kN was used to evaluate the fatigue crack growth behavior of the welded joints. From this investigation, it was found that the joints fabricated by duplex stainless steel filler metal showed superior fatigue crack growth resistance compared to the joints fabricated by austenitic and ferritic stainless steel filler metals. Higher yield strength and relatively higher toughness may be the reasons for superior fatigue performance of the joints fabricated by duplex stainless steel filler metal.
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页码:917 / 924
页数:7
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