去应力退火处理对301不锈钢0.12mm冷轧带钢力学性能的影响  

Effect of Stress-Relieving Annealing Treatment on Mechanical Properties of 0.12 mm Cold-Rolled Strip of Stainless Steel 301

作　　者：秦红霞[1] 

机构地区：[1]安泰科技股份有限公司北京空港新材分公司,北京101318

出　　处：《特殊钢》2014年第1期68-70,共3页Special Steel

摘　　要：通过连续去应力退火炉将1．2mm热轧带钢冷轧成0．12mmSUS301不锈冷轧带钢（／％：0．13C，0．35Si，1．63Mn，0．033P，0．002S，16．54Cr，6．27Ni，0．051N）在单位张力20MPa下进行250—400℃、退火速度8．0—15．0m／min的去应力退火对该钢力学性能影响。试验结果表明，去应力退火前301钢0．12mm冷轧带钢的HV值、抗拉、屈服强度和伸长率分别为498，1623MPa，1498MPa和6．9％；随退火温度升高，301钢冷轧带钢的强度和硬度增加，同时伸长率下降，在给定的温度下，随退火速度的增加该冷轧带钢的伸长率增加。在400oC8．0～12．5m／min退火时，因产生马氏体相和位错的攀移，冷轧带钢的HV硬度值I〉525，抗拉强度和屈服强度分别为1771．7～1790．0MPa和1566．7～1623．3MPa。A test for the effect of stress-relieving annealing with unit stress 20 MPa and annealing speed 8.0 - 15.0 m/min at 250 -400 ℃ on mechanical properties of 0. 12 ram strip cold-rolled from 1.2 mm hot-rolled plate of stainless steel SUS301 （/%： 0. 13C, 0. 35Si, 1.63Mn, 0. 033P, 0. 002S, 16. 54Cr, 6. 27Ni, 0. 051N） has been carried out by continuous stress-relieving annealing furnace. Results show that before stress-relieving treatment the HV value, tensile, yield strength and elongation of 0. 12 mm cold-rolled strip of steel 301 are respectively 498,1 623 MPa, 1 498 MPa and 6. 9% ; with raising annealing temperature, the strength and hardness of cold-rolled sheet of steel 301 increase while the e- longation of steel decreases; at definite temperature with increasing annealing rate, the elongation of cold-rolled sheet of steel increases. As annealing at 400 ℃ with 8.0 - 12. 5 m/rain, owing to formation of martensite phase and dislocation mi- gration the hardness HV value of cold-rolled sheet is up to t〉 525, and the tensile and yield strength are respectively 1 771.7 - 1 790.0 MPa and 1 566.7 - 1 623.3 MPa.

关 键 词：301不锈钢 冷轧带钢 去应力 退火 力学性能 

分 类 号：TG156.23[金属学及工艺—热处理]