深潜器耐压壳用钛合金保载疲劳服役可靠性研究进展

张滨, 田达, 宋竹满, 张广平

Research Progress in Dwell Fatigue Service Reliability of Titanium Alloys for Pressure Shell of Deep-Sea Submersible

ZHANG Bin, TIAN Da, SONG Zhuman, ZHANG Guangping

表4 TC4、TC4 ELI及Ti62A钛合金室温保载疲劳性能[3,22,51,68,89]

Table 4 Dwell fatigue properties of TC4, TC4 ELI, and Ti62A titanium alloys at room temperature[3,22,51,68,89]

Alloy Microstructure σmax / σs σmax / MPa Th / s R Ndf Ref. TC4 Bimodal 0.900 - 120 0.1 3700 [68] TC4 Bimodal 0.950 765 1 0 25205 [51] TC4 Bimodal 0.950 765 10 0 16722 [51] TC4 ELI - 0.906 - 600 0 1315 [3] TC4 ELI - 0.924 - 600 0 1060 [3] TC4 ELI - 0.941 - 600 0 735 [3] TC4 ELI - 0.959 - 120 0 456 [3] TC4 ELI - 0.959 - 600 0 306 [3] TC4 ELI - 0.959 - 900 0 379 [3] TC4 ELI - 0.976 - 600 0 232 [3] TC4 ELI Equiaxed 0.956 815 120 0 2373 [89] TC4 ELI Equiaxed 0.956 815 120 -1 238 [89] TC4 ELI Equiaxed 0.956 815 120 0.5 761 [89] Ti62A Bimodal 0.950 893 1 0 18092 [22] Ti62A Bimodal 0.950 893 10 0 14534 [22]