焊缝区不同部位的硬度存在一定差异。
The difference exists in hardness at various places in fusion zone.
焊缝区金属变形程度大是产生焊合纹的关键；
The large degree of deformation of the metal in the weld seam is the key caused the weld stripes.
焊缝区裂纹。在焊缝线或紧靠焊缝线出现的裂纹。
Weld Area crack. A crack in or immediately adjacent to the weld line.
冲击处理使焊缝区和母材区的强度和伸长率均有所增加。
The tensile strength and the elongation percentage of the parent metal and the weld zone increased slightly.
涂活性剂焊缝区晶内组织并未因补焊次数的增加而粗大；
The microstructure of welding intracrystalline repair welded with flux does not grow up with increasing time.
结果表明，气侧焊缝区与近焊缝区存在很高的焊接残余应力。
The result show that there was very high welding residual stress on the welding joints and their adjacent area in the gas side.
焊缝区的硬度值波动范围很小，抗拉强度比母材增加约20％。
The hardness of weld region shows'less variation than base metal and the ultimate tensile strength of TMAZ is almost 20% improvement.
验证结果表明，除了焊缝区之外，本文提出的计算理论是可靠的。
The results showed by verification that, outside the range of weld joint, the calculation theory proposed by this paper is reliable.
对于同一种热处理状态的焊缝，焊缝区的硬度取决于不同的焊丝。
As for welding seams of the same heat treatment state, the hardness of welding seam area depends on different welding wires.
焊缝区组织主要为等轴晶和树枝柱状晶，熔合区组织主要为柱状晶。
The crystallizing morphology on the weld seam was equiaxed grains and dendrites and that on the fusion area were columnar crystals.
通过对焊接接头的硬度检测，发现熔合区硬度下降，焊缝区略有上升。
The hardness tests on welding joints prove this by showing that the hardness reduces in fusion area, and increases slightly in weld zone.
结论表示，焊缝区没有裂纹，产品尺寸及焊缝区硬度均满足产品要求。
The results show that there are no cracks and dimension deformation within welding zones, and the hardness of welding zones meets the requirements of the ring gear.
从焊缝区到母材，显微硬度值逐渐下降，焊缝区硬度值高出母材约35。
The microhardness declined from the welding line to base metal, and the microhardness of the welding line was about 35 higher than that of base metal.
裂纹扩展在焊缝区和半熔化区之间交替进行，并非严格按W／F界面破断。
Crack propagation conducts alternatively between the weld zone and the partially molten zone, and is not strictly to rupture at W/F boundary surface.
焊缝金属区晶粒分布均匀，焊缝金属区多为针状铁素体，能够提高焊缝区的韧性。
Weld metal zone are mostly acicular ferrite which can improve the weld zone toughness.
与母材相比，焊缝区组织细小，硬度较高，焊缝区不同部位的硬度存在一定差异。
Compared with base metal, the microstructure in fusion zone is finer, and the hardness is higher. The hardness difference exists at various places in fusion zone.
裂纹扩展的微观特征研究：在热影响区与焊缝区的裂纹扩展均为沿晶与穿晶混合型。
Micro characteristic of cracks propagation research: the path of crack propagation in the heat-affected zone and weld metal is the mix of transgranular and intergranular.
热板焊接导致了焊缝区的聚态结构发生变化，从而使焊接接头的强度略高于母体强度。
This kind of welding makes the change of the aggregative structure in seam zone thus resulting in a slightly better strength in this zone than in the matrix.
焊缝区的硬度值较基体316L板及铝板各自的硬度值高，表明界面有化合物存在。
Hardness value of welding area is higher than that of 316l and aluminum. It indicates that there are the compounds on the interface.
经过固溶处理后，焊缝组织晶粒变大，焊缝区和母材区弥散分布着大量的颗粒状析出物。
After solution treatment, the weld grains become coarse along with a large amount of granular precipitates dispersed in weld zone and base metal zones.
通过模拟温度场结果与焊缝区组织的比较，验证了不同的温度场与不同焊缝组织的对应关系。
The corresponding relations between temperature field and microstructure of welding zone were validated by comparing simulation results with microstructure morphology.
焊接过程中搅拌焊针的结构形状是影响焊缝区塑性软化材料流动方式的主要因素，从而影响焊缝的成型质量。
The structure and dimension of welding pin are the main factors which affects the flow direction of the plastic metal in FSW zone and the quality of the FSW seam.
进一步比较了断裂拉杆和已经产生裂纹的拉杆焊缝区的显微组织，发现在焊缝的热影响区粗晶区存在沿晶裂纹。
The fracture rod has cracks in the microstructure of weld zone, intergranular cracks exists in the coarse grain zone of the weld heat affected zone.
焊缝区和热影响区试样的辉纹间距较基体区的大，说明裂纹扩展速率快，焊缝和热影响区的抗裂纹扩展性较基体差。
The striation spacing in heat affect zone and welded seam samples was wider than that in matrix sample, this shows that fatigue crack propagation...
钎焊焊缝的枝晶间显微疏松导致的应力集中与微裂纹效应以及近焊缝区母材晶粒长大是导管早期疲劳开裂的主要原因。
The results show that the crack initiates at the outer surface of the weld comer and propagates into the steel base material with a high cycle fatigue mode.
本文采用概率断裂力学方法和可靠性分析方法，针对压力容器焊接接头的组织不均匀特点，研究了焊缝区疲劳失效概率模型。
The paper studies the fatigue failure probabilistic model of the weld zone in welded joint using probabilistic fracture mechanics and reliabilitistic analysis methods.
通过分析l 245钢埋弧焊焊缝区质量、微观组织和拉伸性能关系表明，焊接工艺参数的合理制定是低合金钢l 245焊管产生裂纹等缺陷的关键因素。
By analyzing the relation of microstructure, weld zone quality and tensile property, it is concluded that the welding technological parameter of L245 steel is the main factor of the welding crack.
研究焊缝长度、加劲肋和横隔板等对腹板应力的影响，探讨锚固区设计的进一步优化。
For further optimization design, the influences of weld length, stiffening rib and diaphragm plate for the web stresses distribution are studied and compared.
本文将高匹配焊缝或热影响区(haz)淬硬层中含纵向裂纹的焊接接头简化为硬夹层含平行裂纹的力学不均匀体模型。
In the paper welded joints with a crack in transverse overmatched weld or HAZ were simplified into a model in which a transverse hard layer contains a crack parallel to the interfaces.
本文将高匹配焊缝或热影响区(haz)淬硬层中含纵向裂纹的焊接接头简化为硬夹层含平行裂纹的力学不均匀体模型。
In the paper welded joints with a crack in transverse overmatched weld or HAZ were simplified into a model in which a transverse hard layer contains a crack parallel to the interfaces.
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