Establishing the Role of Hydrogen in Metal Plasticity
收藏ESRF Portal2027-01-01 更新2026-04-23 收录
下载链接：
https://doi.esrf.fr/10.15151/ESRF-ES-1911529492
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资源简介：
Hydrogen (H) is essential to decarbonize industry, but its use today is limited because it embrittles the metals and alloys required to store/distribute it. Despite 150 years of research, the fundamental mechanisms of H-embrittlement are still poorly understood. H atoms form a solid solution of interstitials in structural metals that affect the behavior of dislocations. While dislocations are essential to understand plasticity and deformations, it is still unclear whether H enhances or reduces their mobility. This matter is hotly debated, as no technique can measure dislocations and their motion deep inside bulk crystals during stress. We developed time-resolved and 3D dark-field X-ray microscopy (DFXM) and use it to study the interactions of deep subsurface dislocations. We now seek to use DFXM to directly measure how H alters the structure and interactions forces between dislocations, offering the first direct measurements to reconcile conflicting H-altered mobility models.
提供机构：
Stanford University, Laboratory for Advanced Materials, McCullough Bldg, 476 Lomita Mall Ca, 94305 Stanford, Usa; Stanford University , Department of Applied Physics, CA, 94305 Stanford, Usa; STANFORD UNIVERSITY, MATERIALS SCIENCE AND ENGINEERING, 496 LOMITA MALL DURAND BLDG. #104 STANFORD, Ca, 94305-4034 Palo Alto, California, Usa
创建时间：
2027-01-01
