研究了Ti811(Ti-8Al-1Mo-1V)和TC4(Ti-6Al-4V)两种钛合金对热盐应力腐蚀(HSSC)的敏感性.结果表明:Ti811合金对HSSC非常敏感,在相同条件下其热盐应力腐蚀临界应力(σHSSC)明显低于TC4合金,且低于同温度的蠕变强度,而TC4合金的σHSSC高于同温度的蠕变强度;两种合金在HSSC暴露过程中,明显遭受到盐腐蚀,腐蚀产生的氢扩散到基体中,致使合金发生脆化,从而降低合金的室温塑性. The sensitivity of Ti811 (Ti-8Al-1Mo-1V) and TC4 (Ti-6Al-4V) to hot salt stress corrosion (HSSC) was studied.The results show that Ti811 alloy is very sensitive to HSSC and under the same conditions Under the same temperature, the σHSSC of TC4 alloy is lower than that of TC4 alloy, and the σHSSC of TC4 alloy is higher than that of the same temperature. During the HSSC exposure, Significantly affected by salt corrosion, hydrogen generated by corrosion is diffused into the matrix, resulting in embrittlement of the alloy, thereby reducing the room temperature plasticity of the alloy.