本文介绍了相变超塑性焊接技术。
This paper dealt with the welding with phase transformation induced superplasticity technology.
该工艺属塑性焊接。
热弹塑性有限元法和固有应变法是焊接变形预测的两种主要数值方法。
Thermal-elastic-plastic and inherent strains FE methods are two means, which have been applied to the prediction of welding deformation.
焊接接头强度、塑性均可达到与母材相当的水平。
The strength and plasticity of welds were equivalent to the base metal.
这也从分形理论的角度证明了在超塑性固相焊接头的形成过程中，焊接面各微区的焊合状态是非均匀性的。
It is proved by fractal theory that the welded state of every micro zone at welded surface is uneven in the formation process of isothermal superplastic solid-state welding joint.
采用热模拟方法，对EH36MOD钢焊接热影响区粗晶区(CGHAZ)的相变超塑性及其对疲劳寿命的影响进行了研究。
The transformation superplasticity in welding CGHAZ (Coarse Grain Heat Affected Zone) of EH36MOD steel and its effect on fatigue life have been studied with thermal simulating method.
两种材料焊接接头在动载和预应变下的屈服强度和抗拉强度均有所提高，但对其塑性影响均不大。
The yield and tensile strength of the welded joints of the two kinds of materials increase under dynamic loading and prestrain condition that have little effect on the plasticity of structural steel.
焊接接头的塑性变形试验在油压机上进行，变形过程中采用了双保温措施。
Experiment of plastic deformation is done on press and double heat preservation measure is used during plastic deformation.
焊缝导向弯曲试验的目的是检查焊接接头的完好性和塑性以及材料的焊接工艺和表面缺陷。
The purpose of weld guide bending test is to detect plasticity of welding joint, welding process and surface defects of materials.
本文根据焊接热传导及热弹塑性的研究现状，对如下两个问题进行了探讨。
Based on the situation of welding thermal conduction and thermo-elastoplasticity research, this paper explores some problems in this field.
主要内容包括：机械工程材料与热处理、铸造、塑性成型和焊接四大部分的基础知识，涉及工程材料及其材料加工工艺的各个方面。
Its mostly content includes the mechanical engineering material and heat treatment, casting, plasticity shaping and welding. Dealing with engineering materials and its processing technical.
结果表明：锤击处理可明显强化焊接接头，特别是随焊锤击能够明显强化焊趾，提高焊件的强度和塑性。
Results shows that penning in the weakest region of welded joint may strengthen welded toe obviously, and substantially improve ductility and strengthen of weldment.
断口扫描电镜观察显示断口有一定的塑性，未发现气孔和焊接缺陷。
SEM showed no pores and other defects and some ductility at laser welding area.
用比拟的方法分析和计算了爆炸焊接条件下，爆炸复合材料结合区中塑性变形金属的动态屈服强度值。
This paper analysed and calculated the dynamic yielding strength of plastic deformed metal in the bonding zone of explosive welding composite material in the condition of explosive welding.
介绍热塑性塑料超声波焊接原理、特点。重点探讨了膜式煤气表膜片组件装配过程中对超声铆接技术的应用。
Introduces the principle and features of the ultrasonic welding of the thermoplastic staking technology in the course of gas meter diaphragm assembling.
整个焊接板由弹性变形区、压缩塑性变形区、拉伸塑性变形区和熔池组成。
Whole weldment includes practically elastic deformation zone, compressive plastic deformation zone, tensile plastic deformation zone and melting pool.
被加热后，合金的塑性变差，易脆性大，不容易焊接。
After being heated the alloy's plasticity becomes bad, easy brittleness, not to be easy to weld.
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.
前轮对处于脆性温度区间的焊缝金属施加一个横向挤压塑性应变，减小甚至抵消致裂的拉伸应变，防止了焊接热裂纹的产生。
The front impact roller causes transverse plastic compression strain in the weld which is in the brittle temperature range, which counteracts the tensile strain which leads to hot cracking.
采用塑性变形理论和刚粘塑性材料模型研究了直流电阻对焊接头的塑性变形。
The joint deformation of DC upset butt welding was studied by using theory of plastic deformation and rigid-viscosity plastic material model.
从压入量、倾角、搅拌工具的外形、焊接速度、旋转速度和材料所处位置等方面研究了工艺参数对金属塑性流动的影响。
The influences of plunge depth, push angle, profile of tool, rotation speed and welding speed on metal flowing were studied.
具有优良的塑性、韧性和抗裂性能，焊接压力容器、船舶、海洋工程等重要结构。
It has excellent mould, toughness and crack resistance, use for welding key structure, such as pressure containers, ships and ocean projects, etc.
通过考虑材料微观塑性损伤，定量研究了焊接接头中强度匹配、试件几何形状对接头抗延性裂纹扩展行为的影响。
The effects of strength mis-matching and specimen geometry on the resistance behavior to ductile crack growth for welded joint were conducted by 3-D FE analysis considering the micro-plastic damage.
采用平面应力弹塑性有限元法研究了含有多部损伤的焊接接头裂纹尖端J积分的变化规律。
The J integral values in the vicinity of the crack tip in welded joints were numerically analyzed by using the plane stress elastic-plastic finite element method.
本试验首次采用再结晶显示金属内塑性变形区的方法观察分析了焊接接头中冷裂纹产生的塑性变形区域。
In this investigation recrystallization in metals was first used to study the plastically - deformed zone induced by cold cracking in welds.
结果表明：焊接接头横截面宏观结构特征表现为焊核区的“洋葱环”和热-机械影响区的塑性流线变形，洋葱环的环间距随着距焊缝中心距离的增大而减小；
The experiment result shows that the spacing of onion rings, which is the most prominent features of most friction stir welds, decreases with the distance of onion ring to centerline increasing .
该温度场能够反映实际焊接过程的基本特征，可以作为焊接过程热弹塑性分析的依据。
The obtained transient temperature field can represent the basic characteristics of the real welding process and can be used as the foundation of thermal elastic-plastic analysis.
扩散焊焊接中的塑性变形条件对接头性能有很大影响，目前对其影响规律缺乏系统认识。
Plastic deformation conditions have great influence on the diffusion bonded joint, but there was little knowledge about its rule.
扩散焊焊接中的塑性变形条件对接头性能有很大影响，目前对其影响规律缺乏系统认识。
Plastic deformation conditions have great influence on the diffusion bonded joint, but there was little knowledge about its rule.
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