Analysis on Properties of 6005A Aluminum Alloy Complex Product of Rail Car Body with Large Cross Section
WANG Yu;HAN Shi-tao;WANG Zhou-bing;LIU Huan;WANG He-cheng;Liaoning Zhongwang Group Co.,Ltd.;
For rail car body 6005 A aluminum alloy complex products with large cross section,the low rate of final product,the size of the profile and the fusion mouth instability are always the technical problems in production. According to the technical agreement and customer requirement,the sample of 6005 A rail car body is tested and analyzed by optical microscope,electronic universal testing machine,brinell hardness tester,optical spectrum analyzer and aluminum profile compression testing machine. The mechanical properties,grade of grain size and fracture morphology of fusion mouth are studied. The results show that the mechanical properties of 6005 A profile produced by 225 MN extrusion press meet the customer requirements. The maximum mechanical properties can reach tensile strength 311 MPa,yield strength 287 MPa,elongation 16. 0% and brinell hardness 95. 2 HB. The grain size of cortical layer can reach 1 grade,the grain size of matrix reaches 6 grade and the fracture cross section of fusible mouth is fibrous.
【CateGory Index】： TG146.21;U270.41