Transactions of Materials and Heat Treatment

Title：Experimental research on tensile test of B170P1 multi-gauge high strength steel laser tailor-welded blanks

Authors： CHEN Jie1 CHEN Wei2 XUE Lei2 CHENG Shan2 TENG Guang-yu2 WU Ming-yan2(1.School of Mechanical and Electrical Engineering Suzhou Vocational University Suzhou 215104 China 2.School of Mechanical Engineering Jiangsu University Zhenjiang 212013 China)

Unit：

KeyWords： high-strength steel laser tailor-welded blanks welding process tensile test mechanical property

ClassificationCode：TG456.7

year,vol(issue):pagenumber：2009,34(5):33-36

Abstract：

Two types of B170P1 high-strength steel with different thicknesses were welded with different laser welding process parameters.The tailor-welded blanks were examined in tensile test.The mechanical property was investigated for the different laser welding parameters.The results show that the welding specimens with higher power have lower plasticity and ductility if the welding quality is eligible.Increasing the welding speed appropriately can enhance the plastic nature and ductility of welding specimens.The true stress-strain curve will be higher with the increasing heat input.It indicates that the plasticizing capacity will decrease with the increase of heat input.Small heat input can increase the plastic forming properties of tailor-welded blanks.

Funds：

国家自然科学基金资助项目(50775102);; 江苏省教育厅“青蓝工程”资助项目(苏教师〔2007〕2号)

Reference：

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