低温去应力退火对板式换热器用316L不锈钢冷冲压波纹板耐蚀性能的影响  

Effect of low-temperature stress relief annealing on corrosion resistance of 316L stainless steel cold stamping corrugated plate for plate heat exchanger

作　　者：史伟 俄馨 王彦龙 刘丽梅 雍红团华 张平 Shi Wei;E Xin;Wang Yanlong;Liu Limei;Yong Hongtuanhua;Zhang Ping(Lanzhou LS Test Technology Co.,Ltd.,Lanzhou Gansu 730314,China;Gansu Engineering Laboratory of Materials Characterization and Safety Evaluation for Machinery Equipment,Lanzhou Gansu 730314,China;Gansu Engineering Technology Research Center of High-end Castings and Forgings,Lanzhou Gansu 730314,China;Lanzhou Lanshi Heat Exchange Equipment Co.,Ltd.,Lanzhou Gansu 730314,China;Lanzhou Lanshi Zhongke Nanotechnology Co.,Ltd.,Lanzhou Gansu 730314,China)

机构地区：[1]兰州兰石检测技术有限公司,甘肃兰州730314 [2]甘肃省机械装备材料表征与安全评价工程实验室,甘肃兰州730314 [3]甘肃省高端铸锻件工程技术研究中心,甘肃兰州730314 [4]兰州兰石换热设备有限责任公司,甘肃兰州730314 [5]兰州兰石中科纳米科技有限公司,甘肃兰州730314

出　　处：《金属热处理》2021年第7期140-143,共4页Heat Treatment of Metals

基　　金：兰州市重大科技专项(2017-2-20);兰州市科技计划(2019-4-48)。

摘　　要：通过马氏体含量测试、XRD物相分析和电化学测试等手段研究了去应力退火对板式换热器用316L不锈钢冷冲压波纹板片耐腐蚀性能的影响。结果表明,随着去应力退火温度的升高,由于奥氏体和应变诱导马氏体相的协作变形导致了316L不锈钢冷冲压波纹板片中残留奥氏体向马氏体的继续转变,使马氏体含量增加并发生马氏体向回火马氏体的转变,造成其自腐蚀电位变得更负,耐腐蚀性能变差。Effect of stress relief annealing on corrosion resistance of the 316L stainless steel cold stamping corrugated plate for plate heat exchanger was studied by means of martensite content detection,XRD phase analysis and electrochemical test.The results show that with the increase of stress relief annealing temperature,the continuous transformation from residual austenite to martensite is caused by the cooperative deformation of austenite and strain induced martensite in the 316L stainless steel cold stamping corrugated plate,resulting that the content of martensite is increased and the martensite transforms to tempered martensite,the self-corrosion potential becomes more negative and the corrosion resistance becomes worse.

关 键 词：316L不锈钢 板式换热器 去应力退火 马氏体含量 

分 类 号：TH49[机械工程—机械制造及自动化] TG115[金属学及工艺—物理冶金]