论文部分内容阅读
钢中残余奥氏体含量对钢材的机械性能有直接影响,如降低硬度、减少尺寸稳定性,容易产生磨削裂纹等。因此生产上采取种种措施,如冷处理、渗碳后高温回火等方法来减少残余奥氏体量。但是,近年来,基于金属材料强韧性相的存在有很多好处,因此现在越来越多的人注意到利用残余奥氏体作为韧性相来提高钢的强韧性。无论是那种影响,都必须定量知道钢中残余奥氏体含量,以便扬长避短。测定残余奥氏体含量方法甚多:有金相法、磁性法、x射线法等。本工作对用x射线法测定不同钢中的残余奥氏体含量进行了探讨。
The residual austenite content of steel has a direct impact on the mechanical properties of steel, such as reducing the hardness, reducing dimensional stability, easy to produce grinding cracks. Therefore take various measures in production, such as cold treatment, high temperature tempering after carburizing and other methods to reduce the amount of retained austenite. However, in recent years, there are many benefits due to the presence of a tough phase based on metallic materials. Therefore, more and more people are now paying attention to the use of retained austenite as a tough phase to improve the toughness of the steel. Regardless of the effect, the amount of retained austenite in the steel must be known quantitatively in order to be weak. Determination of retained austenite content of many ways: a metallographic method, magnetic method, x-ray method. In this work, the determination of retained austenite content in different steels by x-ray method was discussed.