摘要
针对某增压器台架耐久性考核240 h的直径100 mm的Ti Al合金涡轮,通过对比分析考核前后涡轮轮毂芯部的微观组织和力学性能,并结合未考核涡轮轮毂取样的高温持久试验结果,评价了Ti Al合金增压器涡轮轮毂的耐久性。结果表明,在考核试验后,涡轮轮毂芯部的微观组织、洛氏硬度和室温抗拉强度仍保持考核前的水平;同时,参照该型涡轮服役条件下的高温持久加载后,试样的层片组织仍保持完整,仅只在层片团界析出了体积分数0.5%的等轴γ晶粒。可见,该Ti Al涡轮轮毂具有良好的耐久性,能够满足应用要求。
Based on Ti Al turbocharger wheel with the diameter of 100 mm after rig endurance test for total 240 h, this paper evaluated the endurance of turbocharger wheel hub from the aspects of the microstructure and mechanical properties. The results show that the microstructure and mechanical properties of the samples cut from the hub core of turbocharger wheel still retain a considerable level after endurance test. And the microstructure of the sample cut from the hub core of turbocharger wheel without rig test has an excellent stability after stress creep loading for 1000 h under the actual working condition. So the hub of the turbocharger wheel has a satisfactory endurance that can meet the application requirement.
作者
朱春雷
李胜
张继
何洪
刘烨
Zhu Chunlei;Li Sheng;Zhang Ji;He Hong;Liu Ye(Division of High Temperature Materials,Central Iron and Steel Research Institute,Beijing 100081,China;National Key Laboratory of Diesel Engine Turbocharging Technology,China North Engine Research Institute,Tianjn 300400,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2020年第3期980-984,共5页
Rare Metal Materials and Engineering
