摘要
研究了退火温度对两种高硅钢材料的显微组织和显微硬度的影响。结果表明,合金元素Cr的加入可以细化高硅钢的晶粒,保证材料的硬度和韧性;在退火过程中,材料的晶粒随温度的升高而增大,在1000℃左右发生再结晶而形成等轴细晶;随退火温度升高,材料的显微硬度先增大后变小,在高温下晶粒长大对硬度的影响大于有序相转变的影响,可保证材料高温退火后的延展性。
The influences of annealing temperature on microstructure and hardness of two kinds of high silicon steel materials were studied. The results show that the addition of Cr can refine the grain of high silicon steel, and guarantee its hardness and toughness. In the annealing process, the grain size increases with the increase of temperature, and the recrystallization and the formation of equiaxed fine grain happene at about 1000 ℃. With the increase of annealing temperature, the microhardness of the material increases first and then decreases. The effects of grain growth on hardness is greater than the ordering phase transformation under high temperature which can ensure the ductility of the material after high temperature annealing.
出处
《热加工工艺》
CSCD
北大核心
2016年第4期225-227,232,共4页
Hot Working Technology
基金
江苏省高校自然科学研究资助项目(05KJD046C198)
关键词
高硅钢
退火
组织
硬度
high silicon steel
annealing
microstructure
hardness
