Effect of Si content on fatigue fracture behavior of hot-rolled high-silicon steels
Effect of Si content on fatigue fracture behavior of hot-rolled high-silicon steels
复制标题
Si含量对热轧高硅钢疲劳断裂行为的影响
DOI：
10.1088/1742-6596/843/1/012046
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Takao Yamazaki
中科院分区：
文献类型：
--
作者：
Osamu Umezawa;Jyunichi Kanda;Takao Yamazaki
当硅含量从1.5%增加到5%时，材料的屈服应力和极限抗拉强度都有所提高。加工硬化率也随硅含量的增加而增加。相反，随着硅含量的增加，延伸率降低，断裂方式由韧性向脆性转变。随着硅含量的增加，材料的107周疲劳强度提高。在1.5质量%的硅钢中观察到小的取向不均，呈梯形分布。在晶界附近，含硅量大于3%的钢存在应变不相容现象。晶界附近有局部的晶格旋转。
As the Si content was increased from 1.5 to 5 mass%, both the yield stress and ultimate tensile strength were increased, respectively. The work hardening rate was also increased as the increase of Si content. On the contrary, the elongation was decreased as the increase of Si content, and the fracture manner was shifted from ductile to brittle. The 10 7 cycles fatigue strength was higher as the increase of Si content. The small misorientation distribution as ladder-like was detected in the grains of 1.5 mass% Si steel. Around the grain boundary, the strain incompatibility was detected in the steels containing over 3 mass% Si. The lattice rotation was locally detected in the vicinity of grain boundaries.