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短时高温试验是适应现代高速飞行器的发展而建立起来的一种新型的力学性能试验方法。目前已有多种试验方案, 其中快速加热恒应力拉伸试验是在某恒定应力下, 以一定的速率加热试件, 测定合金的应变与温度的关系, 并从而求得材料在试验条件下的屈服温度(通常以引起0.2%的残余应变为准)。本文简要地评述了短时高温试验方法的现状; 介绍了为进行快速加热恒应力拉伸试验而建立的试验装置, 并提供了国产Д16AT及B95AT合金的初步试验数据;最后还对所得数据进行处理和分析。
Short-term high temperature test is to adapt to the development of modern high-speed aircraft and established a new type of mechanical properties test method. At present there are a variety of test programs, of which rapid heating constant stress tensile test is a constant stress, a certain rate of heating the specimen, the determination of the relationship between strain and temperature of the alloy, and thus obtain the material under test conditions Yield temperature (usually caused by 0.2% residual strain). This paper briefly reviews the status quo of the short-term high temperature test method, introduces the experimental setup for the rapid heating constant-stress tensile test, and provides the preliminary test data of domestic Д16AT and B95AT alloys. Finally, the data obtained are also processed And analysis.