论文部分内容阅读
为了开发新的耐蚀钢及合金,以及改善这类材料的质量,必须了解它们的热塑性和影响热塑性的因素。本文介绍了一系列耐蚀钢(包括铁素体、奥氏体及铁素体——奥氏体钢)及合金(NiCr、NiMo)的热塑性图。这些热塑性图是根据作者用楔形轧制试验的研究结果及文献中资料绘出的。讨论了由于受金属中某些元素含量及高低倍组织的影响,使热塑性发生变化的某些特点。文章的后部分别绘出了在生产材料时利用热塑性图的实例(有18个图和一个表),从这些实例中可归结出下述几点; 1.随着α相的含量和分布的不同,铁素体——奥氏体钢的热塑性图具有双极值的两条曲线。 2.从铁素体钢到合金,材料的热塑性降低。 3.在硫、氧和铝的影响下,材料的热塑性明显恶化,若保持一定的锰含量可以适当的改善材料的热塑性。
In order to develop new corrosion-resistant steels and alloys, and to improve the quality of such materials, one must understand their thermoplasticity and the factors that affect the thermoplastic. This article presents a series of thermoplastic diagrams of corrosion resistant steels (including ferritic, austenitic and ferritic-austenitic steels) and alloys (NiCr, NiMo). These thermograms are based on the authors’ findings from the wedge rolling tests and from the literature. Discussed some of the characteristics of changes in the thermoplastic due to the impact of some elements in the metal and the organization of high and low magnification. At the back of the article, respectively, examples of the use of thermoplastics in the production of materials (18 figures and a table) are drawn from which the following points are summarized: 1. With the content and distribution of the alpha phase In contrast, the thermogram of ferritic-austenitic steels has two curves with bipolar values. 2. From ferritic steels to alloys, the thermoplasticity of the material is reduced. Under the influence of sulfur, oxygen and aluminum, the thermoplastic of the material obviously deteriorates. If a certain manganese content is maintained, the thermoplastic property of the material can be properly improved.