原子能科学技术2016，Vol.50Issue(3)：492-497,6.DOI:10.7538/yzk.2016.50.03.0492
氧化物弥散强化低活化合金的微观组织及力学性能
Microstructure and Mechanical Property of Oxide Dispersion Strengthened Reduced Activation Alloy
王文涛 1刘实 1李依依1
作者信息
- 1. 中国科学院 金属研究所，辽宁 沈阳 110016
- 折叠
摘要
Abstract
To improve the properties of reduced activation alloy (CLF‐1) at high temper‐ature ,the oxide dispersion strengthened (ODS) CLF‐1 was prepared by ball‐milling and hot isostatic pressing mixed powders of Ar atomized CLF‐1 and nanometer Y2 O3 .The samples were treated at different temperatures for different time ,and the microstructure was analyzed and mechanical performs were measured .The result shows that the main matrix is tempered martensite after normalizing and tempering ,and the grain size is quite uniform after normalizing at 1 100 ℃ .The microstructure is less affected by the tempering temperature ,w hile the Vickers hardness is reduced w hen tempering tempera‐ture is escalated .In the heat treatment sample ,the dispersed particles of Y2 O3 and pil‐ing up of dislocation are observed , which demonstrates the dispersion strengthened effect .Larger particles with diameter of about 100 nm are inclined to distribute at the grain boundaries ,while smaller ones scattering within the grains .The ODS CLF‐1 in present study displays excellent tensile properties at high temperature , the tensile strength is up to 370 MPa ,and the elongation is 18.5% at 600 ℃ .The tensile yield strength and ultimate tensile stress decrease with the increase of temperature .关键词
ODS/Y2O3/CLF-1Key words
ODS/Y2O3/CLF-1分类
能源科技引用本文复制引用
王文涛,刘实,李依依..氧化物弥散强化低活化合金的微观组织及力学性能[J].原子能科学技术,2016,50(3):492-497,6.
