t和d軌道能級Mdt）提出了新設計的α型鈦（α-Ti）合金。新設計合金Ti-5Al-4Zr-3.6Sn、改性合金Ti-5Al-3Sn-1.9Zr和參考合金Ti-5Al-2.5Sn具有相同的Bot值（3.847）以及不同的Mdt值（2.430，2.426，2.422）。測試了3種α-Ti合金的極限抗拉伸強度（σUTS）、斷裂應變（?f）和熱鹽腐蝕性能。3種α-Ti合金均采用冷坩堝懸浮熔煉技術(shù)進行制備。結(jié)果表明，3種合金樣品均具有均勻的微觀結(jié)構(gòu)。在3種α-Ti合金中測量到的α單相晶粒尺寸約為600 μm。Ti-5Al-4Zr-3.6Sn合金的σUTS和?f值為801 MPa和16%，Ti-5Al-3Sn-1.9Zr合金的σUTS和?f值為708 MPa和15%，Ti-5Al-2.5Sn合金的σUTS和?f值為603 MPa和15%。熱鹽腐蝕測試進行28.8 ks后顯示Ti-5Al-4Zr-3.6Sn、Ti-5Al-3Sn-1.9Zr和Ti-5Al-2.5Sn合金的失重率為2.61%、2.83%和3.10%。σUTS、?f和耐熱鹽腐蝕結(jié)果表明，新設計合金Ti-5Al-4Zr-3.6Sn是一種有實際應用潛力的鈦合金材料。;Newly designed α-type titanium (α-Ti) alloys were proposed based on both electron parameters (bonding time Bot and d-orbital energy level Mdt). The newly designed α-Ti alloy Ti-5Al-4Zr-3.6Sn, modified alloy Ti-5Al-3Sn-1.9Zr, and reference alloy Ti-5Al-2.5Sn have the same Bot value of 3.847 and different Mdt values of 2.430, 2.426, and 2.422, respectively. The ultimate tensile strength (σUTS), fracture strain (?f), and hot salt corrosion resistance of the three α-Ti alloys were measured. The three α-Ti alloys were produced by the cold crucible levitation melting (CCLM) technique. Results show that homogeneous microstructures can be observed in three α-Ti alloys. The α mono-phase in three α-Ti alloys has the grain size of approximately 600 μm. σUTS and ?f of Ti-5Al-4Zr-3.6Sn alloy are 801 MPa and 16%, respectively; σUTS and ?f of Ti-5Al-3Sn-1.9Zr alloy are 708 MPa and 15%, respectively; σUTS and ?f of Ti-5Al-2.5Sn alloy are 603 MPa and 15%, respectively. After hot salt corrosion tests were conducted for 28.8 ks, the mass loss ratio of Ti-5Al-4Zr-3.6Sn, Ti-5Al-3Sn-1.9Zr, and Ti-5Al-2.5Sn alloys is 2.61%, 2.83%, and 3.10%, respectively. The results of σUTS, ?f, and hot salt corrosion resistance indicate that the newly designed alloy Ti-5Al-4Zr-3.6Sn has great potential for practical applications."/>