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随着科学技术的发展,对于金属强度的要求越来越高了。金属强度能否再提高呢?如果能提高,能提高多少?用什么办法提高呢?这些都是重要而饶有趣味的问题。经过人们许多世代的努力,今天已经能将金属的强度提高几倍到十几倍了。这一成就,使现代的机器和建筑物变得更轻巧、更牢固。但这是否已经达到登峰造极的境地了呢?我们能否再把金属的强度提高上百倍,上千倍?这不是空想。近年来科学家在所谓金属胡须方面的研究,就已经给我们指出了提高金属强度的新途径。那么,这项研究何以有可能帮助我们找到提高金属强度的新途径呢?这要从金属强度的来源谈起。金属强度何处来金属材料在使用当中,总要受到各种各样外力的作用。外力企图使金属材料变形和断裂;但金属材料本身
With the development of science and technology, the requirements for metal strength have become higher and higher. Can the metal strength be raised again? If it can be improved, how much can it be raised, and how can it be improved? These are important and interesting questions. Through the efforts of many generations of people, it has been possible to increase the strength of metals by several to ten times. This achievement has made modern machines and buildings lighter and stronger. But has this already reached the top of the plate? Can we increase the strength of the metal by a factor of 100 or a thousand times? This is not an illusion. In recent years, the scientists’ research on the so-called metal beard has given us a new way to increase metal strength. So why is this research possible to help us find new ways to increase the strength of metals? It starts with the source of metal strength. Where metal strength comes from When the metal material is used, it is always subjected to various external forces. External force attempts to deform and fracture the metal material; but the metal material itself