提升钛合金耐蚀性能的合金化及微观组织因素浅析  

Analysis of Alloying and Microstructure Factors to Improve Corrosion Resistance of Titanium Alloys

作　　者：王楚 黄帅 何苗霞 董月成[1] 金禹彤 常辉[1] WANG Chu;HUANG Shuai;HE Miaoxia;DONG Yuecheng;JIN Yutong;CHANG Hui(Nanjing Tech University,Nanjing,Jiangsu 211816,China)

机构地区：[1]南京工业大学,江苏南京211816

出　　处：《石油管材与仪器》2023年第4期21-26,31,共7页Petroleum Tubular Goods & Instruments

基　　金：国家重点研发计划“苛刻环境能源井钻采用高性能钛合金管材研发及应用-高强韧耐蚀钛合金油套管工业化制造成套技术研发”(编号:2021YFB3700802);国家自然科学基金重点项目“深海极端环境下大型钛合金结构应力腐蚀机理研究”(编号:51931008);江苏高校优势学科建设工程资助项目(PAPD)支持。

摘　　要：近年来,世界各地的石油和天然气生产都在向海陆架发展,钻井和生产平台、管道系统和设备也面临越来越苛刻的腐蚀环境,传统金属和合金的防腐性能越来越满足不了生产需求。钛合金具有高的比强度和优异的耐腐蚀性能,在石油化工、海洋工程领域的应用越来越广泛。钛合金表面氧化膜的生成是其优异耐腐蚀性能的根本原因,但在其使用过程中,仍面临缝隙腐蚀、电偶腐蚀、应力腐蚀和氢脆等问题。从钛合金合金化元素、微观组织调控及表面技术出发,探讨钛合金防腐蚀机理,为新型耐蚀钛合金的设计和加工提供理论指导。In recent years,oil and gas production around the world is moving to the offshore shelf.Drilling and production platforms,pipeline systems and equipment are also facing increasingly corrsive environments,therefore traditional metals and alloys are becoming unable to meet production needs.Titanium alloys have high specific strength and excellent corrosion resistance,and are increasingly used in petrochemical and offshore engineering.The generation of oxide film on the surface of titanium alloy is the fundamental reason for its excellent corrosion resistance,but it still faces problems such as crevice corrosion,galvanic coupling corrosion,stress corrosion and hydrogen embrittlement during its service.In this paper,we will explore the corrosion mechanism of titanium alloys from titanium alloying elements,microstructure regulation and surface technology,and provide theoretical guidance for the design and processing of new titanium alloys.

关 键 词：钛合金 合金化 组织调控 表面技术 腐蚀机理 

分 类 号：TG335.7[金属学及工艺—金属压力加工]