And the low-temperature fracture was mainly quasicleavage step, this demonstrated that the fracture mede was transgranular type fracture.
低温拉伸时呈穿晶断裂，断口主要为准解理台阶；
It was found that the room-temperature fracture of the under-aged 3j21 alloy was of a dimple, while the low-temperature fracture assumed a mixed rupture feature.
结果表明：欠时效态3J 21合金的室温断口为韧窝断口，而低温断口呈现混合断裂特征。
High manganese steels undergo a ductile to brittle transition at low temperature, which is accompanied by a change in the fracture mechanism from dimple fracture to intergranular fracture.
高锰奥氏体钢随温度降低其断裂机制由韧窝状断裂转变到晶界断裂。
Temperature impacted on the fracture stress and elastic modulus of the material obviously. Elevated temperature will lead to low fracture stress and smaller elastic modulus.
温度对断裂应力和弹性模量的影响也比较明显，高温会导致低的断裂应力和小的弹性模量。
Structural Steels tend to brittle fracture at low temperature and with high thickness.
随着温度的降低和厚度增加，钢材的脆性增加。
In addition the features of high temperature low cycle fatigue fracture surfaces are given.
还介绍了发生过载损伤后高温低循环疲劳断口的特征。
The grain fracture of energetic particle bed as a result of dynamic impact and dynamic compression at different temperature was measured by using a high-low pressure launch set.
利用高低压发射装置，测定了含能颗粒床在不同环境温度下动态撞击与动态挤压的破碎程度；
It studied the influences of alloy elements, processing temperature, contents of metal and additives on the fracture section morphology of low-melting alloy filled polymer.
研究了合金元素、加工温度、金属含量、第三组分对低熔点金属填充聚合物材料断口形貌的影响。
This paper proposes the analytical method for fracture mode and design method for prevention of brittle fracture at low temperature.
提出了钢结构断裂模式的分析方法和钢结构低温脆断设计方法。
The fracture appearance is dimple at room temperature, it changes into intercrystalline fracture at low-temperature.
其冲击断口微观形貌由室温时的韧窝断口逐渐变为低温下的塑性沿晶断口。
Fracture morphology is more rough in room temperature, low fatigue stress and more fatigue cycles, but the length of fiber pullout is longer.
室温及疲劳循环应力低、循环周次多的断口粗糙度大，纤维拔出较长；
The low temperature fracture mechanism of high manganese austenitic steels is studied.
研究了高锰奥氏体钢的低温断裂机制。
But they may easily produce low viscosities and high fluid leak off from the fracture at high temperature, which limit their applications to hydraulic fracturing and fracture-packing treatments.
但它们在高温条件下容易导致粘度降低且在裂缝中漏失量很大，上述缺点限制了其在水力压裂和压裂充填措施中的应用。
A novel solid residue-free fracture fluid system suitable to middle well temperature was developed for the geological feature of low porosity and low permeability in Jilin Oilfield.
针对吉林油田低孔、低渗的特点，开发了适合中等井温的新型无固相压裂液体系。
The main reason of inclined pipe fracture was low frequency stress fatigue failure at temperature field.
斜管开裂的主要原因是温度场下的低频应力疲劳破坏。
The reservoir in upper Paleozoic of North-Dingbian block has the characteristics of low porosity, tight, high temperature, natural fracture and low natural production.
定北区块上古生界储层具有低孔、致密、高温、天然裂缝发育、基本无自然产能等复杂特征。
After low temperature test, the sample does not appear breaks or brittle fracture.
光纤槽道能承受低温试验。 试验后，试样不产生裂痕或脆断；
After low temperature test, the sample does not appear breaks or brittle fracture.
光纤槽道能承受低温试验。 试验后，试样不产生裂痕或脆断；
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