根据钢管塑性变形理论分析了裂纹形成过程，提出了减少裂纹的措施。
The crack development process is also analyzed with the steel tube plastic deformation theory, and corrective actions are accordingly put forward.
目前大量研究表明，金属材料在裂纹形成过程中，表面会发射大量的低能电子。
At present a large number of researches indicate that the surface of metal material while the crack forms, can be emitted massive low energy electrons.
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.
轴承零件在淬火冷却过程中因内应力所形成的裂纹称淬火裂纹。
Bearing parts in the process of hardening cooling by internal stress due to the formation of quenching cracks crack said.
认为这些黑色覆盖物为脉冲电流在放电过程中，油性液体介质裂变产物(主要为碳黑)涂覆在裂纹内部形成的积碳。
The black material is considered as carbon deposition, which is formed by oily-liquid medium fission product (mainly carbon black) covering inside crack during the discharge process of pulse current.
此外，还定性分析了淬火、回火后残余应力的性质及热处理工艺过程对裂纹形成的影响。
In additions the paper qualitatively analyses the influence of residual stresses occurring after quenching and tempering and the process of heat treatment on the formation of the cracks.
这是由于在裂纹的传播过程中，裂纹尖端沿着传播方向的中线上下振荡所形成的。
This is formed by the cracks oscillating about the centerline in the direction of crack propagation.
实验还观察到砂岩表面微缺陷发生闭合的全过程，在冷却过程也有微裂纹形成等现象。
Also a closing course of initial crack and thermal cracking coming into being in the cooling process are observed in our experiment.
在焊接过程中产生的动态应力应变及随后形成的残余应力，是导致焊接裂纹和接头性能下降的重要因素。
The dynamic stress-strain and welding residual stress during welding are the significant factors which lead to welded cracking and debasement of the joint properties.
采用微观测试分析方法对激光快速成形过程熔覆层裂纹的形成机理及影响因素进行研究。
The forming mechanism and influencing factors of crack in laser rapid forming cladding layers are investigated through micro measurement and analysis methods.
分析结果再现了矿柱从微破裂产生到宏观裂纹形成、最后产生失稳破坏的全过程，并研究了统计平均强度与极限承载力的关系。
The paper numerically demonstrates the pillar failure process-from micro crack to macro crack to unstable failure and studies the relations between limit load and statistical mean strength.
结果表明：轮箍裂纹是由于钢锭中存在严重的皮下气泡，在轮箍热加工过程中皮下气泡处金属被氧化烧穿导致不能粘合而形成裂纹。
The result showed that the crack forming was due to the billet metal in the subcutaneous blow holes were oxidated during heating process and could not be sticked.
疲劳过程中主裂纹的形成消耗了大部分的疲劳寿命，一旦主裂纹形成就快速扩展瞬间断裂。
During the fatigue process, the formation of the main crack expends most of the whole fatigue life, and once the main crack forms, the crack propagates rapidly and fractures immediately.
拉伸过程中形成的氧化物夹杂成为裂纹源，断口表现为沿晶断裂。
The fracture surface appeared intergranular crack, due to the oxide formed during tensile test.
蜂蜡干了之后，会产生一些裂纹，这些裂纹在染色过程中渗透进靛蓝 色，于是形成了如冰花式样的美妙纹理。 这样自然天成的纹理可以说是蜡染的灵魂所在。
When the beeswax dries, it develops cracks, which absorb indigo in the process of dyeing, thus forming the beautiful natural lines resembling breaking ice.
UTM的形成可能是由于过热区内热损伤裂纹造成的，如果裂纹没有被及时处理，就会在实际使用过程中扩展。
UTM formations may be accompanied by heat-induced cracking within these overheated areas that, if left in place, can propagate while in service.
从生产实际出发，分析了锻模液态模锻成形过程中热裂纹形成的主要原因，提出了降低锻模热裂纹的几点措。
In the paper, the hot crack for the forging die made by methods of squeeze casting is analyzed, how to reduce the hot crack is also given out.
因而可以推断干燥过程不是水稻应力裂纹形成的主要阶段，其应力裂纹的形成主要出现在干燥结束后和吸湿过程中。
It is concluded that the rough rice may be fissured after drying or during moisture adsorption. Through the experiments, the rough rice fissuring mechanism has been studied.
研究中，将宏观断裂力学及微观断裂物理相结合，根据位错产生微裂纹机制，对磨削过程的微裂纹的形成采用位错赛积模型来描述。
According to the mechanism that micro-cracks come into being from the dislocation, the dislocation piled-up model is used to describe the grinding crack.
煤岩体的电磁辐射是由于非均质煤岩体在应力作用下非均匀变速变形及裂纹形成与扩展过程中，内部电荷的迁移而产生。
EME occurred when inhomogeneous coal or rock is loaded at uneven speed with the moving of internal electrical charges during the development of cracks.
对两种晶粒尺寸的中碳钢光滑试样进行了旋转弯曲疲劳试验；应用复型技术监测了短裂纹形成与扩展过程，研究了晶粒尺寸对短裂纹行为的影响。
The process of crack initiation and propagation was observed through replication, and the effect of grain size on the behaviour of short fatigue cracks was studied.
岩体爆破开挖过程中，开挖荷载瞬态卸荷伴随着爆破破岩的裂纹扩展、爆生气体逸出以及新自由面形成等过程而发生。
The transient release of excavation load is accompanied by the development of cracks, the outburst of detonation gases and the formation of new free surface during the rock fragmentation by blasting.
通过有色金属应力断料中的开拓性工作，从微细观层次上解释了应力切断断口上裂纹源的形成，以及裂纹扩展的物理过程；
The paper introduces the work which the author got from the development work of stress fracturing material emerged in the non ferrous metal.
该研究方法改变了研究辊套裂纹形成与裂纹扩展两个单独处理的现状，而使其成为一个完整的统一的分析过程。
The research method which change the status that crack generation and crack expansion were analysed respectively, and built an entire and unitive analysis procedure.
通过X射线衍射分析（XRD）、扫描电镜（SEM）等观察分析了复合粉涂层表面形貌，分析了表面微裂纹和孔隙的形成过程。
Phases constitution, microstructure and element distribution of the coating were studied by X-ray diffraction(XRD), scanning electron microscope(SEM) and electron probe microanalysis(EPMA).
通过X射线衍射分析（XRD）、扫描电镜（SEM）等观察分析了复合粉涂层表面形貌，分析了表面微裂纹和孔隙的形成过程。
Phases constitution, microstructure and element distribution of the coating were studied by X-ray diffraction(XRD), scanning electron microscope(SEM) and electron probe microanalysis(EPMA).
应用推荐