|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced High-strength Steels
||Hydrogen Trapping and Desorption due to Nanometer-sized Copper Particles in Quenched-and-tempered Martensite Steel
||Hung-Wei Yen, Yu-Chen Lin, Hsin-Chih Lin
|On-Site Speaker (Planned)
The behavior of hydrogen trapping and desorption due to copper particles was investigated in a quenched-and-tempered martensite steel. Microstructure was characterized by scanning electron microscope (SEM) and transmission electron microscope (TEM). Hydrogen was electrochemically charged into steels and its desorption was measured in the house-constructed thermal desorption spectroscopy (TDS). Based on the analyses by Kissinger method and McNabb-Foster method, the binding energy related to copper particle was estimated to be about 40 kJ/mol. Strong enhancement in hydrogen trapping was observed when the steel was tempered at 540 C or 600 C. In slow strain-rate tensile tests, steel with copper precipitation displayed better resistance to hydrogen embrittlement. Hence, precipitation of copper is a metallurgical approach to enhance the resistance to hydrogen embrittlement in steels.
||Planned: Supplemental Proceedings volume