Lawrence Cho

Publications

Characteristics and Mechanisms of Hydrogen-Induced Quasi-Cleavage Fracture of Lath Martensitic Steel

January 10, 2021

Author(s)

Lawrence Cho, Peter E. Bradley, Damian S. Lauria, May L. Martin, Matthew J. Connolly, Jake Benzing, Eun Jung Seo, Kip O. Findley, John G. Speer, Andrew J. Slifka

This study presents an in-depth characterization of the microstructures, crystallographic orientations, and dislocation characteristics beneath the hydrogen

Transgranular Cracking in a Liquid Zn Embrittled High Strength Steel

January 15, 2020

Author(s)

Diptak Bhattacharya, Lawrence Cho, Ellen Van der Aa, Hassan Ghassemi-Armaki, Andreas Pichler, Kip O. Findley, John G. Speer

Intergranular Zn-assisted liquid metal embrittlement (LME) cracks have been frequently reported in steels, involving austenite grain boundary penetration of

Focused Ion Beam-Induced Displacive Phase Transformation From Austenite to Martensite during Fabrication of Quenched and Partitioned Steel Micro-Pillar

January 5, 2020

Author(s)

Eun Jung Seo, Lawrence Cho, Jin Kyung Kim, Javad Mola, Lijia Zhao, Sukjin Lee, Bruno C. De Cooman

We report evidence of displacive phase transformation from retained austenite to martensite during preparation of quenched and partitioned steel micro-pillars

Effects of Al-Si Coating and Zn Coating on the Hydrogen Uptake and Embrittlement of Ultra-High Strength Press-Hardened Steel

September 25, 2019

Author(s)

Kyoung Rae Jo, Lawrence Cho, Dimas H. Sulistiyo, Eun Jung Seo, Seong Woo Kim, Bruno C. De Cooman

Press-hardened steel (PHS), used for automotive safety-related structure parts, is sensitive to hydrogen embrittlement due to its martensitic microstructure

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Lawrence Cho (Assoc)

Publications