拍摄了热疲劳裂纹的形核、成长、连接过程。
The nucleation, growth and connection of fatigue cracks were photographed.
研究了稀土变质及热处理对低铬耐磨铸铁热疲劳裂纹形成的影响。
The effect of re modification and heat treatment on formation of thermal fatigue crack in low chromium wear-resistant cast iron was investigated.
由于表面热疲劳裂纹的产生，使得材料强度性能损伤大于断裂韧性损伤。
The strength loss is greaser than the fracture toughness loss, because ofthe surface cracks caused. by thermal fatigue.
观察了在热应力作用下gjw35钢结硬质合金表面热疲劳裂纹扩展过程。
The process of thermal fatigue crack propagation on the surface of steel bonded carbide GJW35 under the action of thermal stress has been observed.
利用扫描电镜对失效压铸模具热疲劳裂纹的宏观、微观、断口形貌进行了分析。
The macro-morphology, micro-morphology and fracture morphlogy of failure die casting dies were analyzed.
文摘：观察了在热应力作用下gjw35钢结硬质合金表面热疲劳裂纹扩展过程。
Abstract: the process of thermal fatigue crack propagation on the surface of steel bonded carbide GJW35 under the action of thermal stress has been observed.
结果表明：萌生后的热疲劳裂纹优先在硬质相中扩展，遇到钢基体相后受阻、钝化。
The results show that the thermal fatigue cracks after forming propagate preferentially in the hard phase, and the propagation of crack is stoped and dulled when it meet steel basic phase.
通过对再热热段至低旁暖管管道角焊缝上裂纹的解剖分析，其原因是热疲劳裂纹引起的。
Through the pipe sample cutting and analyzing the crack in the fillet weld between the hot reheat pipe and the warming pipe, it was found out that the cause of the crack is due to the thermal fatigue.
对含有35 %WC的钢结硬质合金在热应力作用下热疲劳裂纹形成过程进行了反复观察。
Thermal fatigue crack forming process of steel bonded carbide containing 35% WC by the action of thermal stress has been observed time and time again.
无论是淬火或淬回火态的试样其热疲劳裂纹主要沿着碳化物与基体脱开处及晶界裂纹桥接而扩展。
The thermal fatigue crack propagated mainly through the break-age of the interface of carbide and grain boundaries for either quenched or quenched and tempered steel.
结果表明，封严篦齿上的裂纹为热疲劳裂纹，裂纹的形成主要与第三封严篦齿附近的温度场有关。
The results show that the cracks on the sealing labyrinth are heat-fatigue cracked resulted by the temperature field around the third tooth of the sealing labyrinth.
结果表明，精铸热锻模的主要失效形式为热磨损、塑性变形、热疲劳裂纹、冲击疲劳破断和脆性断裂。
The results show that hot-forged cast dies take thermal wear, plastic deformation, thermal fatigue, impact fatigue fracture and brittle fracture as predominant failure patterns.
发电站蒸汽管道的支管连接部位以及与之相连接的支管接管座处出现的热疲劳裂纹，严重影响了发电机组的安全运行。
The steam pipe and correlative branch pipe of power plant are detected to appear thermal diffuse crack, which influence the normal run of the generator severely.
本论文进行模拟实验并有限元方法，获得蒸汽管道支管及接管座管壁温度场和热应力的分布规律，阐明热疲劳裂纹产生的原因；
To study the reason of appearance of the thermal diffuse crack, Temperature and thermal stress analysis of the steam pipe and correlative branch pipe was performed with finite element analysis method.
热冲击疲劳裂纹的形成与微孔洞的形核、长大和连通有关。
The crack formation of thermal shock fatigue is related to the nucleation, growth and join of microvoid.
研究了YG10硬质合金热冲击疲劳裂纹的形成机制。
The formation mechanism of thermal shock fatigue crack of cemented carbide YG10 was investigated.
研究了金属陶瓷热冲击疲劳特性，重点探讨了裂纹的形成机制。
The thermal shock fatigue character of cermets has been studied and the formative mechanism of crack discussed in detail.
在承受频繁的弯曲应力作用后，在其焊接热影响区萌生了裂纹源进而发生疲劳开裂。
In frequent bending stress condition, fatigue cracking occurred due to the cracking source had been initiated in welding heat affected zone.
由于奥氏体的隔离作用，裂纹的扩展得到有效抑制，其热疲劳性能得到大幅提高。
Due to the isolating effect of the austenite the expanding of the crack would be hindered efficiently, so the thermal fatigue property of the alloy was largely increased.
在不同的切削条件下，疲劳裂纹和热裂纹是造成刀具材料失效的主要原因。
The formation of the fatigue cracks and the thermally induced cracks are mainly responsible for the failure of the ceramic tool materials under various cutting conditions.
加入0.3 ？的合金不论在裂纹萌生阶段还是裂纹扩展阶段，其热疲劳抗力都优于其它成分的合金。
The thermal fatigue resistance of alloy with 0.3? Addition is superior to that of other alloys, during crack initiating and propagating.
在不同的切削条件下，疲劳裂纹和热裂是造成刀具材料失效的主要原因。
The formation of the fatigue cracks and the thermally induced cracks are mainly responsible for the failure of the ceramic tool materials un der various cutting conditions.
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Moreover, the fatigue crack growth rates of the weld metal and heat affected zone are lower than those of the base metal. Having excluded the effect of welding residual tress...
试件的疲劳断裂模式全部为双面穿板断裂，疲劳裂纹起始于点焊热影响区搭接板内表面，沿板厚方向向外表面扩展；
Fatigue specimens cracked at two-sided through-thickness sheet, fatigue crack appeared initially in HAZ of inner surface of lap plates, along the thickness direction extended to outer surface;
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Having excluded the effect of welding residual tresses on crack closure, fatigue crack growth rates of the welded join...
在排除焊接残余应力导致的裂纹闭合效应后，焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Having excluded the effect of welding residual tresses on crack closure, fatigue crack growth rates of the welded join...
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