本文關(guān)鍵詞： 不銹鋼 核電材料 應(yīng)力腐蝕開裂 高溫堿性溶液 斷口形貌　出處：《金屬學(xué)報》2015年06期 　論文類型：期刊論文

【摘要】：利用電子背散射衍射(EBSD)和顯微硬度(HV)測量技術(shù),表征了原始態(tài)、鍛造固溶處理態(tài)和鍛造去應(yīng)力處理態(tài)316LN不銹鋼(316LNSS)的顯微組織和殘余應(yīng)變.利用U型彎曲應(yīng)力腐蝕評價方法,研究了3種材料在325℃,3.5%Na OH溶液中的應(yīng)力腐蝕開裂(SCC)行為的差異.結(jié)果表明,原始態(tài)316LNSS的SCC數(shù)量最多,裂紋擴展速率最大,而鍛造固溶處理態(tài)316LNSS的SCC敏感性最低;原始態(tài)和鍛造固溶處理態(tài)的316LNSS在高溫堿性溶液中發(fā)生明顯的沿晶應(yīng)力腐蝕開裂(IGSCC),而鍛造去應(yīng)力態(tài)的316LNSS發(fā)生混合型SCC;去應(yīng)力處理不能有效消除鍛造過程中可能產(chǎn)生的條帶組織,不利于316LNSS整體抗SCC性能的提高.
[Abstract]:The original state was characterized by electron backscatter diffraction (EBSD) and microhardness measurement (HVV). The microstructure and residual strain of wrought solid solution treatment and forging stress free treatment 316LN stainless steel (316LNSS) were evaluated by U-bending stress corrosion evaluation method. The difference of stress corrosion cracking (SCC) behavior of three kinds of materials in the solution of 325 鈩，

本文編號：1442041