论文部分内容阅读
一、概述由于电子显微镜的发展,对低碳马氏体(以下简称低马)形态的研究有了飞快的进展,它揭示了马氏体的精细结构,使人们对其有了更进一步的了解和明确的概念。一般认为,结构件均采用中碳结构钢(45钢)或中碳低合金结构钢(40Cr、35CrM_0等)制造,自从低马工艺广泛推广应用以来,许多件采用A_3、B_3、15、20等低碳钢或20Cr、20CrMn等低碳合金结构钢代替中碳结构钢,不但完全满足了中碳结构
I. Overview Due to the development of the electron microscope, the research on the morphology of low-carbon martensite has been rapidly progressed. It reveals the fine structure of the martensite so that people have a better understanding of it And clear concept. It is generally believed that the structural parts are made of medium-carbon structural steel (45 steel) or medium-carbon low-alloy structural steel (40Cr, 35CrM_0, etc.). Since the widespread application of the low-horse process, many parts have adopted A_3, B_3, Low-carbon steel or 20Cr, 20CrMn and other low carbon alloy structural steel instead of carbon structural steel, not only fully meet the carbon structure