The softening prediction of HSLA steel heat-affected zone based on the grey system

作     者：赵璇 代克杰 杜泽国 

作者机构：School of Power and Mechanical EngineeringWuhan UniversityWuhan430027 College of Physics&Electric-Information EngineeringPingdingshan UniversityHenan467000 Dongfeng Motor Corporation Technical CenterWuhan430058 

出 版 物：《China Welding》 (中国焊接（英文版）)

年 卷 期：2012年第21卷第2期

页      面：69-72页

核心收录：

学科分类：08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

主　　题：grey prediction GM ( 1 1 ) model heat-affected zone softening 

摘      要：The high-strength low-alloy（ HSLA ） steel heat-affected zone （HAZ）softening was predicted using a grey model. HSLA steel DILLIMAX690E, NK-HITEN61OU2 and BHW35 were taken as examples in the research on ultra-narrow gap automatic welding technology. Test results turned out to be that the errors between the values calculated by the Grey Model （GM） （ 1,1 ） model and their actual value were less than 2%, indicating that the grey prediction method could accurately reflect the actual situation of the high-strength low-alloy steel heat-affected zone softening. This method will play a crucial role in guiding the applications of HSLA steel welded structures in the future.