Fatigue Property of Hot Rolled and Cold Rolled Strips  

作　　者：LI Sheng-li LI Na PENG Xing-dong LU Xiang-yu LI Ji-guang 

机构地区：[1]School of Material and Metallurgy,University of Science and Technology Liaoning [2]Shougang Casey Steel Co Ltd

出　　处：《Journal of Iron and Steel Research International》2013年第2期48-51,共4页

基　　金：Item Sponsored by National Natural Science Foundation of China(51074210)

摘　　要：Tension-tension fatigue properties of hot rolled and cold rolled strips with same contents and sizes were measured by using group test method at room temperature in air. The results showed that the fatigue properties of the hot rolled strips were obviously higher than those of the cold rolled strips. The hot rolled strips with similar or higher tensile strength exhibited superior fatigue property over the cold rolled strips. Fracture morphologies observed using scanning electronic microscope （SEM） showed that the hot rolled strips exhibited larger fracture areas, indicating a slightly lower plasticity, and more even fracture microstructure and stable properties. It is feasible and reliable to replace cold rolled strips with hot rolled strips.Tension-tension fatigue properties of hot rolled and cold rolled strips with same contents and sizes were measured by using group test method at room temperature in air. The results showed that the fatigue properties of the hot rolled strips were obviously higher than those of the cold rolled strips. The hot rolled strips with similar or higher tensile strength exhibited superior fatigue property over the cold rolled strips. Fracture morphologies observed using scanning electronic microscope （SEM） showed that the hot rolled strips exhibited larger fracture areas, indicating a slightly lower plasticity, and more even fracture microstructure and stable properties. It is feasible and reliable to replace cold rolled strips with hot rolled strips.

关 键 词：hot rolled strip cold roiled strip fatigue property replacement of cold rolled strip 

分 类 号：TG335.5[金属学及工艺—金属压力加工]