奥氏体不锈钢的晶间腐蚀_罗宏.pdf

18 5 腐蚀科学与防护技术 Vol.18 No.5 2006 9 　　　　CORROSION SCIENCE AND PROTECTION TECHNOLOGY 　　　　 Sep.2006 罗　宏,龚　敏 , 643000 :。C、Cr、P 、、、 ;C N 0.03% 0.10%. :;; :TG157　　:A 　　:1002-6495(2006)05-0357-04 ON INTERGRANULAR CORROSION OF AUSTENITIC STAINLESS STEEL LU Hong,G NG Min Ma teria l and Chem ica l E ngineer ing Dep artm ent, S ichuan Un iversty of S cience and E ng ineer ing, Zigong 643000 ABSTRACT:The mechanisms of intergranular corrosion(IGC)of austenitic stainless steel were intro- duced.The effects of content of carbon, chromium and nitrogen etc.as well as of cool work, casting, welding etc.on IGCwere discussed for austenitic stainless steel.In order to mitigating the susceptibili- ty to IGC, the content of carbon and nitrogen should be limited to 0.03%(maximum)and 0.10% (maximum)respectively,on the other hand,a proper solution heat treating should also be taken. KEY WORDS:austenitic stainless steel;intergranular corrosion;review 　　(IGC), C , , C Cr ( , , (Cr, Fe)C ).(Cr, Fe)C Cr 23 6 23 6 ., , , Cr , [1] , Cr , Cr 12mass%, [2] 10.2% ., , , 427 ℃～816 ℃, -, . , , , () . , , , 、、(, . 、)、 Cr , . , σ(FeCr ), ( [1,4 ～19] . 、), ,