|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Effect of Chemical Composition on Embrittlement of High Manganese TWIP Steel
||Young-Ha Kim, Tae Jin Song, Sung Kyu Kim, Il Jeong Park, Yon-Kyun Song
|On-Site Speaker (Planned)
TWIP (Twinning Induced Plasticity) steels with high strength and excellent ductility show good formability and crash worthiness of car bodies in automotive industry. On the other hand, TWIP steels with high amount of alloying elements can hardly be free from Environmentally Assisted Cracking such as Hydrogen Embrittlement (HE) and Liquid Metal Embrittlement (LME) when Zn is coated on the steel surface to endure in corrosive environment. In this study, we investigate the effect of Al addition on embrittlement of the high manganese TWIP steels, which POSCO has developed, with tensile strength of 1180MPa and elongation of more than 35%. By varying Al content in the TWIP steels, change in HE and LME of the Zn coated TWIP steels will be examined.
||Planned: Supplemental Proceedings volume