smooth fracture

More than 300 smooth and notched specimens of 40 Cr alloy steel undergoing two kinds of heat treatments were used to study the effect of stress triaxiality and temperature on macro-mechanical behaviour and micro-fracture mechanism during the ductile-brittle transition in a range of temperature from 20 ℃ to-196 ℃.

研究了300余件40Cr钢轧制态和调质态试样在20℃至&196℃范围内温度与应力对该材料的韧脆转变力学行为和微观断裂机制的影响。

Then the stepwise propagation of a growing creep crack is analysed by fracture mechanics. The analytical result is in good agreement with the experimental data on Astroloy with wavy and smooth grain boundaries.

用断裂力学分析了蠕变裂纹的台阶式扩展，其结果与弯曲品界和平直晶界Astroloy合金的试验结果吻合良好。

The fracture of titanium side of titanium and copper was smooth, mainly including two elements of titanium and copper, which explained that the copper/ titanium compound formed.

钛/铜界面钛侧断口较平滑，主要含钛、铜两种元素，说明有铜/钛化合物的形成。

The dual-plane observations of fracture surface and adjacent side surface microstructures show that annealing twin boundary fracture, intergranular and transgranular cracking result in smooth planar facet, smoothly curved facet and rough facet, respectively.

对断面与侧面组织的双面观察表明，退火孪晶界断裂、沿晶断裂和穿晶断裂分别形成光滑平面状断裂刻面、光滑曲面状断裂刻面和粗糙不平的断裂刻面。

SMOOTH V series cut off copper, aluminium row fracture with no deformation.

字系列，切断铜铝排断口平整，不变形。