the void and intergranular fracture is developed due to the creep with the stress concentration at the defect tip at elevated temperature.
长期在应力集中作用下缺陷尖端处出现局部的蠕变和蠕变裂纹扩展,形成空洞和沿晶断裂的颗粒状断口。
failure pattern of transgranular fracture and intergranular fracture depends on the intension of crystal.
裂纹尖端晶体强度影响穿晶和绕晶的破坏模式;
this paper shows the results of a study of an intergranular fracture in bot low alloy steel castings, poor ductility and low toughness are often associated with fracture mode.
对两种低合金铸钢的沿晶脆性断裂现象进行了研究,结果表明,两种脆化材料的断口均为沿晶脆性断裂。
the deep and large cavities are formed on fracture surface and grain boundary sliding and intergranular fracture characteristic is obvious on the optimal superplastic deformation condition.
在最佳超塑性条件下,断口中形成了大而深的空洞,晶界滑动和晶间断裂特征明显。
the results showed that the grain boundary cohesion become weaker and intergranular fracture became dominant with the increasement of superplastic deformation temperature.
结果表明,变形温度愈高,晶界结合强度愈低,沿晶断裂愈明显,晶界滑动愈易实现;
intergranular fracture with small fraction of transgranular was its character.