|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||BB-3: Delayed Cracking in Deep-drawn Duplex Stainless Steels: The Role of Plastic Anisotropy, Transformation Kinetics, and Stress Partitioning
||Peijun Hou, Yuan Li, Dongchul Chae, Yang Ren, Hahn Choo
|On-Site Speaker (Planned)
The delayed cracking mechanisms in deep-drawn stainless steel (SS) cups were investigated using synchrotron x-ray (S-XRD) and neutron diffraction (ND) techniques. Four different SS alloys were investigated: metastable austenite, stable austenite, metastable duplex, and stable duplex SS alloys. First, the tensile behavior was examined along three different orientations with respect to the rolling direction of the alloy plates using S-XRD and in-situ ND techniques. The evolutions of phase fraction, texture, and load partitioning among constituent phases will be presented. Also, the earing and cracking behavior were investigated for the deep-drawn SS cups. Finally, the phase distribution, residual stress, and springback stress in deep-drawn cups will be correlated to the constitutive properties of the alloy plates. In this talk, the collective influence of plastic anisotropy, martensite formation kinetics, hardening behavior as well as the role of ferrite phase in the phase-stress partitioning on the delayed cracking phenomenon will be discussed.
||Planned: EPD Congress Volume