Transactions of Materials and Heat Treatment

Title：Analysis of forging structure and fracture for 316LN stainless steel forging crack

Authors： Zhang Yi-shuai Zhang Xiu-zhi Tian Xiang-ju Zheng Xiao-hua liu Pei-pei

Unit： Luoyang Ship Material Institute Taiyuan University of Science and Technology

KeyWords： 316LN nonmetallic inclusion crack initiation fracture morphology

ClassificationCode：TG316.1

year,vol(issue):pagenumber：2011,36(6):1-3

Abstract：

According to the cracking phenomenon in the forging process of 316LN steel for nuclear power main pipe, with the help of metalloscope(OA), scanning electron microscope(SEM) and energy disperse spectroscopy(EDS), the structure in ordinary temperature and tensile fracture of cracked forging were analyzed.The result shows that the existence of brittle alumina increases the tendency of cracking in 316LN forging process.

Funds：

“高档数控机床与基础制造装备”科技重大专项（2009ZX04014-062）

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