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Meeting Materials Science & Technology 2019
Symposium Retained Austenite for High and Ultrahigh Strength Steels
Presentation Title P3-94: The Relationships between Tensile Behavior and Hole Expansion Property of TRIP-aided Steels
Author(s) Jae Hoon Lee, Sang Ho Han
On-Site Speaker (Planned) Jae Hoon Lee
Abstract Scope 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.


Application of Room-temperature Quenching and Partitioning on Medium Mn Steel
Austenite Stability in Bainite Steel After Austempering Heat Treatments
Carbon Partitioning between Ferrite and Austenite in Medium-Mn Steel and its Impact on Mechanical Properties
Effect of Nickel on Austenite Stabilization during Quenching and Partitioning Process in Medium-Mn Steels
Medium-carbon TRIP-aided Bainitic Ferrite Steels
Novel Concepts for Tough Ductile Ultra-High Strength Martensitic / Bainitic Steels Containing Finely Divided Retained Austenite
P3-94: The Relationships between Tensile Behavior and Hole Expansion Property of TRIP-aided Steels
Retained Austenite in Nanobainite Bearing Steel After Austempering Heat Treatments
Tensile Deformation Characteristics and Austenite Transformation Behavior of Advanced High Strength Steel Considering Adiabatic Heating

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