S32101双相不锈钢晶间腐蚀试验裂纹判定  

Determination on Intergranular Corrosion Crack of S32101 Duplex Stainless Steel

作　　者：李海涛 程功 

机构地区：[1]山东核电设备制造有限公司,海阳265118

出　　处：《理化检验（物理分册）》2012年第11期721-723,726,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：美标材料ASTM A240UNS S32101双相不锈钢板按照标准ISO 3651—2:1998中的方法 A(16%硫酸—硫酸铜法,16%为质量分数)进行晶间腐蚀试验后,弯曲受检面处出现裂纹,对空白对比试样实施冷弯后也发现裂纹,难以判定是否为晶间腐蚀所造成的裂纹缺陷。利用金相方法对裂纹形貌进行观察,并结合力学性能测试和化学成分分析,得出弯曲受检面产生的裂纹不是晶间腐蚀所造成的裂纹。Crack was identified in the bend surface after intergranular corrosion test was done on ASTM A240 UNS S32101 duplex stainless steel in accordance with test method A （16% sulfuric acid/copper sulfate test） of and crack was also identified when cold bending was done on the blank comparision specimens. It was hard to determine whether the crack was caused by intergrannlar corrosion. The eraek appearance was observed through metallographie test method, and it was concluded that the crack at the bend surface was not caused by intergranular corrosion.

关 键 词：双相不锈钢 S32101 晶间腐蚀 穿晶裂纹 伸长率 

分 类 号：TG142.71[一般工业技术—材料科学与工程]