一、前言钢铁材料由于含有各种不同的夹杂物,因而是不均匀的,这种夹杂物改变了钢铁材料的各种性能。随着对各种杂质研究技术的发展,材料也就得到了发展。例如:利用内耗的观察方法,明确了动态铁的机理,这种方法有助于对非时效钢板的研究。利用x射线极象图法,明确了结晶方位和织构的问题,对电磁钢板和深冲用钢板的发展起了重要作用。对块状夹杂物,利用电子显微镜和显微分析器就可以仔细观察到。这些都是无疑 I. INTRODUCTION Steel materials are heterogeneous because they contain a variety of inclusions that change the properties of steel materials. With the development of various impurity research techniques, materials have also been developed. For example: the use of internal friction observation method, a clear mechanism of dynamic iron, this method is conducive to non-aging steel research. The use of X-ray polarography method, a clear crystal orientation and texture problems, the development of steel plate and deep drawing plays an important role. The massive inclusions, the use of electron microscopy and microscopic analyzer can be carefully observed. These are no doubt