采用浸泡方法研究了1100℃固溶0.25～2 h对316L不锈钢晶间腐蚀性能的影响,用光学显微镜观察了不同热处理状态316L不锈钢的显微组织与腐蚀形貌的演变,用显微硬度仪测定了不同热处理状态316L不锈钢的硬度.结果表明,在1 100℃固溶时间越长,固溶态试样的显微硬度越高,晶粒尺寸越大.随着固溶时间的延长,固溶态试样的腐蚀失重略有降低,敏化态试样的腐蚀失重先迅速降低,然后不再降低.敏化态试样的腐蚀失重高于固溶态试样1倍以上.所有试样的腐蚀失重都随着腐蚀时间的延长逐渐增加.根据实验结果得出,在1100℃固溶0.5～1 h的试样具有较好的综合性能.
参考文献
| [1] | 陆世英.不锈钢概论[M].北京:原子能出版社,2007 |
| [2] | Chakrapani D G,Esakul K A.Handbook of Case Histories of Failure Analysis[M].Ohio:ASM international,Metals Park,1992 |
| [3] | Ebert H E,Esakul K A.Handbook of Case Histories of Failure Analysis[M].Ohio:ASM international,Metals Park,1992 |
| [4] | Alexandreanu B,Capell B,Was G S.Combined effect of special grain boundaries and grain boundary carbides on IGSCC of Ni-16Cr-9Fe-xC alloys[J].Mater.Sci.Eng.,2001,A300:94 |
| [5] | Hong H U,Nam S W.The occurrence of grain boundary serration and its effect on the M23C6 carbide characteristics in an AISI 316stainless steel[J].Mater.Sci.Eng.,2002,A332:255 |
| [6] | Sahlaoui H,Makhlouf K,Sidhom H,et al.Effects of ageing conditions on the precipitates evolution,chromium depletion and intergranular corrosion susceptibility of AISI 316L:Experimental and modeling results[J].Mater.Sci.Eng.,2004,A372:98 |
| [7] | 李异,褟浩文,韦荣松.316L不锈钢晶间腐蚀机理的探讨[J].腐蚀科学与防护技术,1993,5(2):131 |
| [8] | Thuvander M,Stiller K.Evolution of grain boundary chemistry in a Ni-17Cr-9Fe model alloy[J].Mater.Sci.Eng.,1998,A250:93 |
| [9] | 梁成祥,邱立平,鞠桂玉等.影响尿素级316L型不锈钢耐蚀性因素的分析[J].大连特殊钢,1992,6:8 |
| [10] | 雷锐戈.加热制度对316L铸坯微观组织和力学性能的影响[J].宝钢技术,2009,5:42 |
| [11] | Hall O E.The deformation and ageing of mild steel Ⅲ:Discussion of results[J].Proc.Phys.Soc.London,1951,B64:747 |
| [12] | Petch N J.The cleavage strength of polycrystals[J].J.Iron Steel Inst.,1953,174:25 |
| [13] | Hu C L,Xia S,Li H,et al.Improving the intergranular corrosion resistance of 304 stainless steel by grain boundary network control[J].Corros.Sci.,2011,53:1880 |
| [14] | 方耀华,徐源,张文奇.超纯奥氏体不锈钢00Cr25Ni22Mo2N非敏化态晶间腐蚀与磷(硅)的晶界偏聚[J].金属学报,1989,25:91 |
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