终轧温度对含锡铁素体不锈钢组织和耐腐蚀性能的影响  

Effect of Final Rolling Temperature on Microstructure and Corrosion Resistance of Sn-Containing Ferritic Stainless Steel

作　　者：花国祥 刘秀婷 高峰 HUA Guoxiang;LIU Xiuting;GAO Feng(School of Automation,Wuxi University,Wuxi 214105,China;School of Sciences,Wuxi University,Wuxi 214105,China;School of Material Science and Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]无锡学院自动化学院,无锡214105 [2]无锡学院理学院,无锡214105 [3]东北大学材料科学与工程学院,沈阳110819

出　　处：《机械工程材料》2022年第12期60-66,共7页Materials For Mechanical Engineering

基　　金：江苏省高等学校自然科学研究项目(20KJB460004)。

摘　　要：对冶炼的含锡铁素体不锈钢进行热轧(开轧温度为1 150℃,终轧温度分别为730,800,870,940℃)+退火(950℃×5 min)处理,再进行冷轧+退火(900℃×2 min)处理,研究了终轧温度对冷轧退火板显微组织、耐H_(2)SO_(4)和FeCl_(3)腐蚀性能和电化学性能的影响。结果表明:不同终轧温度热轧下,含锡铁素体不锈钢冷轧退火板的显微组织均由γ纤维再结晶织构组成。随着终轧温度的降低,含锡铁素体不锈钢冷轧退火板晶粒尺寸减小,当终轧温度为800℃时,晶粒尺寸为10~20μm,尺寸分布最均匀;耐H_(2)SO_(4)、FeCl_(3)腐蚀和电化学腐蚀速率均随终轧温度的降低呈先减小后增大的趋势,当终轧温度为800℃时达到最小。The hot rolling(starting rolling temperature of 1 150 ℃, and final rolling temperatures of 730,800,870,940 ℃) and annealing(950 ℃×5 min), and cold rolling and annealing(900 ℃×2 min)treatments were carried out on the smelting Sn-containing ferritic stainless steel. The effects of final rolling temperature on the microstructure of the cold rolled annealed sheet, the corrosion resistance to H_(2)SO_(4) and FeCl_(3) and electrochemical properties were studied. The results show that the microstructures of the cold rolled and annealed sheet at different final rolling temperatures were composed of γ fibre recrystallized grains. With the decrease of the final rolling temperature, the grain size of cold rolled and annealed Sn-containing ferritic stainless steel sheets decreased. When the final rolling temperature was 800 ℃, the grain size was 10-20 μm, and the size distribution was the most uniformly. With the decrease of final rolling temperature the resistance to H_(2)SO_(4), FeCl_(3) corrosion and electrochemical corrosion rate decreased first and then increased, and when the finish rolling temperatures was 800 ℃, both achieving the minimum values.

关 键 词：含锡铁素体不锈钢 热轧工艺 显微组织 耐腐蚀性能 

分 类 号：TP142.71[自动化与计算机技术—控制理论与控制工程]