轧制变形量对铸轧铅合金板带性能的影响  

Effect of Rolling Deformation on Properties of Roll Casting Lead Alloy Strips

作　　者：李建平[1] 姜洪锋[1] 毛大恒[1] 曾立帮[1] 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,长沙410083

出　　处：《材料工程》2012年第4期17-21,共5页Journal of Materials Engineering

基　　金：国家教育部留学回国人员基金资助项目(76084)

摘　　要：从阳极极化稳定电位、腐蚀速率、阳极极化前后表面形态与物相组成、导电性能、力学性能等方面研究了轧制变形量对铸轧铅合金板带性能的影响。结果表明:轧制前后铅合金板带的阳极极化电位变化不大,但能明显提高铅合金的抗腐蚀性能和力学性能。同时随着轧制变形量的增大,铅合金板带的导电性能有所下降。特别是经过两道次变形量为30%的轧制后,抗腐蚀性能是轧制前的1.48倍;同时铅合金板带的抗拉强度σb和屈服强度σp0.2分别提高了28.5%和79.4%,硬度HBS提高了2.8。The effect of rolling reduction on the microstructure and properties of roll casting quaternary Pb-Ag-Ca-Sr alloys was investigated through anodic polarization stable potential,corrosion rate,surface morphology before and after polarization,conductivity,tensile properties and hardness.The results show that： During the process of anodic polarization there are no significant changes on the final stable potential of different lead alloys strips,but the corrosion resistance and mechanical properties of lead alloy strips are improved significantly.The conductivity of lead alloy strips decreases slightly during the rolling.Especially,on the condition of two pass roll with a reduction of 30%,the corrosion resistance is 1.48 times as that of the original lead alloy strips;the ultimate tensile strength σb and yield strength σp0.2 of the lead alloy strips increase by 28.5% and 79.4%,respectively;the hardness HBS also increases 2.8.

关 键 词：铅合金 轧制 阳极极化电位 抗腐蚀性能 力学性能 

分 类 号：TG146[一般工业技术—材料科学与工程]