一、概述设计任何一种用金属材料制成的构件,首先必须了解该材料的性能。要正确测定金属材料的机械性能指标,拉伸速度选择正确与否是关键因素之一。国内外多年来的研究表明,拉伸速度对碳素钢和低碳合金钢的性能指标有着明显的影响。近年来,随着科学技术的迅速发展,现代工业特别是宇航工业,大量采用高级合金钢及有色合金,这些金属材料的机械性能是否也受拉伸速度的影响呢?我部10个工厂及研究单位就这一课题进行了研究。研究材料为 First, an overview of the design of any kind of metal materials made of components, we must first understand the performance of the material. To correctly determine the mechanical properties of metal materials, the choice of tensile speed is correct or not is one of the key factors. Research at home and abroad over the years shows that the tensile speed of carbon steel and low carbon alloy steel performance indicators have a significant impact. In recent years, with the rapid development of science and technology, modern industries, especially aerospace industry, extensive use of advanced alloy steel and non-ferrous alloys, the mechanical properties of these metals are also affected by the tensile speed of the impact? I plant 10 factories and research The unit conducted a research on this subject. The research material is