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首页> 外文会议>International Conference on Advances in Materials and Manufacturing Processes >A study on the microstructure of AISI M2 high speed steel manufactured by continuous casting
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A study on the microstructure of AISI M2 high speed steel manufactured by continuous casting

机译：连铸铸造制造的AISI M2高速钢微观结构研究

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摘要

Continuous casting has been widely applied in the production of steels and other metals. However, it has been rarely used in producing high speed steels, which are still manufactured by the conventional method of mould-casting. Thus, little is known about the microstructure of high speed steels made by the continuous casting technology. In the present work, AISI M2 steel is produced by horizontal continuous casting and the difference of solidification microstructure of ingots by different casting technologies has been examined. The results show that the networks of M_2C eutectic carbides are greatly refined in the ingot by continuous casting compared to that by mould casting. Meanwhile, the morphology of M_2C eutectic carbides changes from the plate-like type to the fibrous one, due to the increasing cooling rates. Compared with the plate-like M_2C, the fibrous M_2C in continuous casting ingots is less stable and decomposes faster at high temperatures, spheroidizing obviously after heating and refining dimensions of carbides.
机译：连续铸造已广泛应用于钢材和其他金属的生产。然而，它已经很少用于制造高速钢，其仍然通过传统的铸造方法制造。因此，关于连续铸造技术制造的高速钢的微结构知之甚少。在本作工作中，AISI M2钢由水平连续铸造产生，并检查了不同铸造技术的铸锭的凝固微观结构差异。结果表明，与模具铸造相比，通过连续铸造在铸锭中大大改装了M_2C共晶碳化物的网络。同时，由于冷却速度的增加，M_2C共晶碳化物的形态从板状类型变为纤维物。与板状M_2C相比，连续铸造锭中的纤维M_2C不太稳定，在高温下更快地分解，在加热和精炼碳化物尺寸后明显地分解。

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