Strain-Rate Dependence of Vacancy Cluster Size in Hydrogen-Charged Martensitic Steel AISI410 under Tensile Deformation
Strain-Rate Dependence of Vacancy Cluster Size in Hydrogen-Charged Martensitic Steel AISI410 under Tensile Deformation
复制标题
拉伸变形下充氢马氏体钢 AISI410 中空位簇尺寸的应变率依赖性
DOI：
10.4028/www.scientific.net/ddf.373.171
复制
发表时间：
2017
影响因子：
--
通讯作者：
Y. Shirai
中科院分区：
文献类型：
--
作者：
K. Sugita;Y. Mutou;Y. Shirai
使用正电子寿命谱研究了拉伸变形下充氢马氏体钢 AISI410 中空位簇尺寸的应变速率依赖性。充氢样品中的空位簇尺寸倾向于随着拉伸变形过程中应变速率的降低而增加。空位簇尺寸与断裂拉伸伸长率显着相关。研究表明，大尺寸空位簇的存在会导致机械性能下降，进而导致脆性断裂。
The strain-rate dependence of vacancy cluster sizes in hydrogen-charged martensitic steel AISI410 under tensile deformation was investigated using positron lifetime spectroscopy. The vacancy-cluster sizes in hydrogen-charged samples tended to increase with decreasing strain rates during the tensile deformations. The vacancy-cluster sizes significantly correlated to the tensile elongations to fracture. It was revealed that the presence of large-sized vacancy-clusters can cause the degradation of mechanical properties and followed by brittle fracture.