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序言近年来国内对于材料的低周疲劳试验研究进展很快。特别是高温低周疲劳、蠕变疲劳交互作用、热机械疲劳(热疲劳的一种)等都有一定的研究成果。当前,从发动机热端零件的设计与选材来看也已非常重视材料的低周疲劳性能。但是,由于零件设计人员与材料疲劳强度研究人员之间缺乏应有的交流和协作,以至阻碍着这些科研成果的应用。
Preface In recent years, the domestic research on the low-cycle fatigue test of materials has progressed rapidly. Especially the high temperature and low cycle fatigue, creep fatigue interaction, thermal mechanical fatigue (a kind of thermal fatigue) and so have some research results. At present, the design and selection of engine hot-end parts also attach great importance to the low-cycle fatigue performance of the material. However, due to the lack of proper communication and cooperation between the part designers and the material fatigue strength researchers, the application of these scientific achievements is hindered.