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摘自《缺鋼》,1988,Vol.74,№3,101～108 本研究是以解析加速冷却过程中铁素体晶粒细化为目的,(1)从加工v在连续冷却相变中的相变特性和相变组织的关系,(2)从等温相变生成核的观点进行研究的。 试验钢以0.09%C—1.45%Mn钢为基础,分别加入0.8%Ni和0.015%的Nb。在连续冷却的情况下将各阶段的等温相变组织急速冻结,观察断面,用非接触式电子光学仪测出的膨胀收缩量检测出相变点,并用图相处理装置测定铁素体晶粒的生成数量和晶粒直径。试验结果认为:
From the “lack of steel”, 1988, Vol.74, №3, 101 ~ 108 The purpose of this study is to resolve the ferrite grain refinement during accelerated cooling, (1) from the processing of phase transition characteristics of continuous cooling in the transformation And the relationship between the phase transition organization, (2) from the perspective of isothermal transformation of nuclei to study. The test steel was based on 0.09% C-1.45% Mn steel and added with 0.8% Ni and 0.015% Nb, respectively. In the case of continuous cooling, the isothermal transformation microstructure of each stage was rapidly frozen, the cross section was observed, the transformation point was detected by the expansion and shrinkage measured by a non-contact electro-optical apparatus, and the ferrite grains The number of generated and grain diameter. The test results think: