Hydrogen Embrittlement Understood
Hydrogen Embrittlement Understood
复制标题
DOI：
10.1007/s11661-015-2836-1
复制
发表时间：
2015-06-01
影响因子：
2.8
通讯作者：
Nygren, K. E.
中科院分区：
文献类型：
--
作者：
Robertson, Ian M.;Sofronis, P.;Nygren, K. E.
氢强化塑性与氢致断裂机制和途径之间的联系是通过检查断裂表面下的演变组织状态，包括空洞、“准解理”和晶间表面建立起来的。这导致了对氢脆的新的理解，即氢增强的塑性过程加速了组织的演变，这不仅建立了局部高度集中的氢，而且建立了局部的应力状态。这些因素共同确立了断裂的机制和途径。
The connection between hydrogen-enhanced plasticity and the hydrogen-induced fracture mechanism and pathway is established through examination of the evolved microstructural state immediately beneath fracture surfaces including voids, "quasi-cleavage," and intergranular surfaces. This leads to a new understanding of hydrogen embrittlement in which hydrogen-enhanced plasticity processes accelerate the evolution of the microstructure, which establishes not only local high concentrations of hydrogen but also a local stress state. Together, these factors establish the fracture mechanism and pathway.