摘要
用材料试验机、SEM、TEM和X 射线分析研究了 3 2Mn 7Cr 0 .6Mo 0 .3N奥氏体钢的组织和从室温到 77K的拉伸性能。结果表明 :随着温度的降低 ,屈服强度 (σ0 .2 )和抗拉强度 (σb)显著上升 ,延伸率 (δ5)和断面收缩率 (Ψ)略有减少 ;77K温度变形前后均为单相奥氏体组织 ,韧窝断口占主导并混有少量准解理小刻面的韧性断裂特征。
The tensile properties from 293K to 77K and structure of austenitic cryogenic steel 32Mn\|7Cr\|0.6Mo\|0.3N by tensile test, SEM, TEM and X\|ray analysis have been studied. The results showed that with the temperature decreasing, the yield and tensile strength increased appreciably, and the elongation and reduction of area decreased slightly. The structure of steel was single austenitic phase in deforming at 77K, and the fracture at 77K was tough feature with minor quasi\|cleavage plane.
出处
《特殊钢》
北大核心
2001年第2期19-21,共3页
Special Steel
基金
国家自然科学基金资助项目 !编号 59771 0 0 1
关键词
高锰奥氏体钢
氮强化
拉伸性能
组织
低温钢
High Mn Austenitic Steel, Cryogenic Tensile, Nitrogen Strengthening
