| Characteristics of Nd： YAG laser welded 600 MPa grade TRIP steel |
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| 引用本文： | 王文权,马凯,孙大千,姜春云.Characteristics of Nd： YAG laser welded 600 MPa grade TRIP steel[J].中国焊接,2010,19(3):11-15. |
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| 作者姓名： | 王文权 马凯 孙大千 姜春云 |
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| 作者单位： | [1]Key Laboratory of Automobile Materials, Jilin University, Changehun, 130025 [2]Changehun Institute of Technology, Changehun, 130012. [3]Department of Material Science ＆ Engineering, Pusan NationalUniversity, Pusan, Korea |
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| 摘 要： |
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| 关 键 词： | Nd：YAG激光焊接 TRIP钢 MPa 基体金属 焊缝金属 贝氏体铁素体 拉伸强度 屈服强度 |
Characteristics of Nd: YAG laser welded 600 MPa grade TRIP steel |
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| Wang Wenquan,Ma Kai,Sun Daqian,Kang Chungyun.Characteristics of Nd: YAG laser welded 600 MPa grade TRIP steel[J].China Welding,2010,19(3):11-15. |
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| Authors: | Wang Wenquan Ma Kai Sun Daqian Kang Chungyun |
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| Abstract: | Microstructures and mechanical properties of Nd: YAG laser welded transformation induced plasticity (TRIP) steel with tensile strength of 645 MPa were studied. Due to high cooling speed of laser welding, the weld metal mainly consists of martensite different from the base metal, which is composed of ferrite matrix with bainite and a little retained austenite. Therefore, the weld metal has maximum hardness at welded joint. The yield strength and tensile strength of welded specimens tested perpendicular to weld line were almost equal to those of the base metal. But the yield strength and tensile strength of welded specimens tested parallel with weld line were a little higher than those of the base metal. The formability of laser welded TRIP steel was decreased compared with that of the base metal. |
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| Keywords: | laser welding transformation induced plasticity steel microstructure and property |
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