摘要
采用OM、XRD和SEM等方法对Ti-2.3Cr-1.3Fe合金在固溶+时效和直接时效后的组织和室温力学性能进行了研究。结果表明:固溶+时效后合金组织由β相和α相组成,强度随时效温度升高而降低,抗拉强度最高为888 MPa,与TC4合金典型热处理后的强度相当,但此时伸长率仅为4.0%;直接时效后合金组织亦由β相和α相组成,强度随直接时效温度升高而降低,塑性变化不大,但伸长率均高于23.0%,合金抗拉强度与轧态和固溶+时效态相比分别降低9.5%和18.5%。
Microstructure of Ti-2.3Cr-1.3Fe alloy after solution and aging treatment（STA） and direct aging treatment was studied by OM, XRD and SEM, and the tensile properties of alloy were analyzed. The results indicate that the microstructure is consists of β phase and α phase after STA, and the strength decreases with the increase of aging temperature, the highest tensile strength is 888 MPa, while the elongation is only 4.0%. After direct aging,the microstructure is consists of β and αphase, the strength decreases with the increase of aging temperature and the plasticity reverses, but all of the elongation are above 23.0%. The tensile strength of direct aging reduces 9.5% and 18.5% compared with the state of STA and rolling.
出处
《热加工工艺》
CSCD
北大核心
2014年第18期178-181,共4页
Hot Working Technology
基金
国家国际科技合作专项(2013DFG52920)
