The results showed that the metallurgical defects such as inclusions, coarse crystal grains and asymmetry of the grainsize were the main reason resulting in fracture of the steel rods during drawing.
结果表明，原材料中存在的夹杂物、晶粒粗大及混晶等冶金质量缺陷是盘条在拉拔过程中发生断裂的主要原因。
2
The effect of crystal content and grainsize of feldspathic porcelain on fracture toughness was discussed in the paper.
本论文重点研究了长石瓷晶相含量和晶粒度对断裂韧性的影响。
3
An increase in crystal grainsize of co-polypropylene probably resulted in a decrease in the specific nonessential work of fracture, which induced less ability in preventing fracture for long time.