316L/Q370qE复合板组织演变特征及腐蚀行为
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摘要
借助扫描电子显微镜(SEM)、硬度仪、万能试验机、盐雾箱等设备,研究了不同的热处理温度对316L/Q370qE力学性能、组织、耐蚀性的影响。实验得出,在热处理温度为400、700、900、1 100℃下,样品的扩散区宽度随着温度升高而加宽。316L/Q370qE复合板界面处的剪切强度为385 MPa,均大于标准要求的210 MPa。316L侧在盐雾环境中以点蚀为主,Q370qE侧以均匀腐蚀为主。400℃的年腐蚀速率最低,700℃的年腐蚀速率最高。
The effects of different heat treatment temperatures on the mechanical properties,microstructure and corrosion resistance of 316 L/Q370 qE were investigated by means of scanning electron microscopy(SEM),hardness tester,universal testing machine and salt spray box.The experiment can be concluded that the diffusion zone width of the three samples is widened with temperature increasing at heat treatment temperatures of 400 ℃,700 ℃ and 1 100 ℃.The shear strength at the interface of 316 L/Q370 qE composite board is greater than 385 MPa,which is greater than 210 MPa required by specifications.The 316 L side is dominated by pitting in the salt spray environment,and the Q370 qE side is dominated by uniform corrosion.The annual corrosion rate is the lowest at 400 ℃ and the highest at 700 ℃.
The effects of different heat treatment temperatures on the mechanical properties,microstructure and corrosion resistance of 316 L/Q370 qE were investigated by means of scanning electron microscopy(SEM),hardness tester,universal testing machine and salt spray box.The experiment can be concluded that the diffusion zone width of the three samples is widened with temperature increasing at heat treatment temperatures of 400 ℃,700 ℃ and 1 100 ℃.The shear strength at the interface of 316 L/Q370 qE composite board is greater than 385 MPa,which is greater than 210 MPa required by specifications.The 316 L side is dominated by pitting in the salt spray environment,and the Q370 qE side is dominated by uniform corrosion.The annual corrosion rate is the lowest at 400 ℃ and the highest at 700 ℃.
引文
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[3]李炎,祝要民,周旭峰,等.316L/16MnR热轧复合板界面组织结构的研究[J].金属学报,1995,31(12):537-542.
[4]骆宗安,王光磊,谢广明,等.铌夹层对真空轧制复合Ti不锈钢板的显微组织及性能的影响[J].中国有色金属学报,2013,23(12):3335-3340.
[5]张铁磊,吉泽升,赵振华.热处理对ZM6镁合金TIG焊后组织性能的影响[J].中国有色金属学报,2013,23(3):593-598.
[6]戴起勋.金属材料学[M].北京:化学工业出版社,2013.
[7]中国机械工程学会热处理学会.热处理手册工艺基础篇[M].北京:机械工业出版社,2008.
[8]徐明.热处理对316L/Q345R爆炸焊复合板组织及性能的影响[D].成都:西南石油大学,2016.
[9]戴成珂,赵刚,徐耀文,等.30CrMo钢表面脱碳试验[J].钢铁,2016,51(7):60-64,70.
[10]谢广明,骆宗安,王国栋.轧制工艺对真空轧制复合钢板组织与性能的影响[J].钢铁研究学报,2011,23(12):27-30.
[11]唐翠华,侯良立.316L-16MnR复合板不锈钢侧晶间腐蚀原因分析[J].理化检验(物理分册),2008(1):48-50,53.
[12]赵浩峰,薛更,韩世平.热处理温度对1Cr18Ni9Ti/16Mn爆炸焊接复合钢板界面组织和性能的影响[J].钢铁研究学报,1998,10(5):53-56.
[13]Ma Yuantai,Li Ying and Wang Fuhui.Corrosion of Low Carbon Steel in Atmospheric Environments of Different Chloride Content[J].Corrosion Science,2009,51(5):997-1006.