|About this Abstract
||Materials Science & Technology 2019
||Retained Austenite for High and Ultrahigh Strength Steels
||P3-94: The Relationships between Tensile Behavior and Hole Expansion Property of TRIP-aided Steels
||Jae Hoon Lee, Sang Ho Han
|On-Site Speaker (Planned)
||Jae Hoon Lee
In order to reduce the vehicle weight by using thinner materials with higher strength, advanced high strength steels (AHSS) are being recognized as automobile structural materials. Stretch flanging of AHSS is an important formability issue for the automobile industry. In this study, relationships between tensile behavior and hole expansion property of TRIP-aided AHSS will be investigated to understand the effect of various tensile properties on hole expansion ratio. It is confirmed that yield stress, ultimate tensile stress, total elongation, and post uniform elongation are closely related with the hole expansion ratio. In addition, the microstructure analysis will be examined in detail to study the connection between tensile properties and hole expansion ratio of TRIP-aided steels.