论文部分内容阅读
一前言在高合金钢的热加工过程中,常常碰到两个问题:一个是如何评价钢的热塑性,一个是如何观察钢在热加工过程中的金属学行为。测定材料的热塑性方法不少,但迄今为止,由于不同方法施于材料的应力状态不同,其热塑性相差较大。斯温登研究室在对钢进行了一系列实验后认为,快速应变速率,热拉伸实验对评定材料的热塑性有十分重要的意义。该室Bywater等人利用焊接热循环模拟装置进行高铬及含钼不锈钢的短时热拉伸实验,获得了满意的结果。此外,钢的热塑性与其加工过程中的金属学行为
A preface In the heat treatment of high-alloy steel, two problems are often encountered: one is how to evaluate the thermoplasticity of steel and the other is how to observe the metallurgical behavior of steel during hot working. There are a lot of thermoplastic methods for the determination of materials, but up to now, due to the different stress states applied to the materials by different methods, the thermoplasticity is quite different. After a series of experiments on steel, the Swindon Laboratory believes that the rapid strain rate and thermal tensile test are very important for the evaluation of the material’s thermoplasticity. Bywater and others using the welding thermal cycle simulation device for high-chromium and molybdenum stainless steel short-term hot tensile test, obtained satisfactory results. In addition, the thermoplastic properties of steels and their behavior during processing