摘要
测试了铸态高碳和低碳铀 钛合金从室温～ 80 0℃温度范围内的拉伸性能。结果表明 ,室温下低碳铀 钛合金的拉伸性能优于高碳铀 钛合金。随着温度升高 ,两种合金的强度下降 ;塑性在低于 5 0 0℃时变化不大 ,高于 5 0 0℃后随温度上升而增加。在 70 0℃附近 ,高碳铀 钛合金的塑性明显降低 ,而低碳铀 钛合金的塑性增长减缓。这是由于在该温度下 ,合金中产生了 β相。此外 ,高碳铀 钛合金中存在较多的碳化钛夹杂物 。
High temperature tensile properties of high carbon and low carbon cast U Ti alloys have been studied. Their strength and plasticity were also determined in the range from room temperature to 800℃. The results indicated that the tensile properties of low carbon U Ti alloy were better than that of high carbon U Ti alloy at room temperature. Tensile strength of both alloys decreased with the rise of temperature. Their plasticity changed little from room temperature to 500℃, and increased rapidly with temperature increment after 500℃. At about 700℃, low carbon U Ti alloy′s plasticity increased relatively slow and high carbon U Ti alloy′s plasticity decreased clearly. The reason was that the β phase formed in the alloys at 700℃. Furthermore, higher amount of TiC inclusion in the high carbon U Ti alloy also decreased the strength of grain boundary.
出处
《理化检验（物理分册）》
CAS
2001年第12期510-513,523,共5页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
