变形金属

本文对座销零件挤压成形过程进行了CAE分析，研究了变形金属的应力分布情况，预测可能出现的成形缺陷，提出了避免缺陷的工艺方案，并进行了相关实验研究。

Cold extrusion process for seat pins has been analysed with CAE . The stress of the forming metal has been studied with prediction of the possible flaw of the parts . A proposal to avoid flaws has been put forward with related experiments given .

采用流函数法构造了塑性变形金属流动的完备速度模式，对Mises材料平面变形和轴对称变形问题，提出并推证了运动可能速度场应满足的力学边界条件一边界切应力约束方程。

The complete velocity model for plastic metal is structured with flow function . The boundary tear stress condition , which should be met by the velocity field of the Mises material plan or axisymmetrical deformation , is raised .

加热速度对冷变形金属的再结晶织构具有很大影响。

Heating rates greatly affect the recrystallization textures of cold deformed metals .

变形金属位错链长统计分布参数的内耗测试方法

The method of internal friction for investigation of dislocation link length distribution in deformed metal

变形金属电极电流效应

The Current Effect of Deformation Metal Poll

然后变形金属（称为切屑）流过刀具（前倾）面。

Then the deformed metal ( called chip ) flows over the tool ( rake ) face .

变形金属位错链长度统计分布理论及应用&Ⅱ.实验技术及应用

Theory and application of statistical dislocation link length distribution in deformed metal & ⅱ . experimental technology and Application

冷塑性变形金属释放其部分应变能的过程叫回复，通常采用热处理的方法。

The relief of some of the internal strain energy of a previously cold-worked metal , usually by heat treatment .

在剖析压力加工中变形金属与模具间发生粘着现象的危害及产生机理后，提出了一种新型熔体润滑剂。

After analyzing the harms and causes of adhesion between deformed metal and die , a new type of melt lubricant is presented .

但是对于非稳态大变形金属塑性成形问题，由于成形过程的复杂性，许多关键应用技术还有待于研究。

But there are still many key techniques , which need more attention for the complexity of the metal deformation in unsteady metal forming process .

采用不同的坯料预热温度进行模拟，变形金属温度沿挤压方向逐渐升高，随着坯料预热温度的升高，挤压压力逐渐下降。

As different billet preheat temperature was simulated , the deformation metal temperature was gradually increased along the extrusion direction while the increase of billet preheat temperature , and extrusion pressure was declined gradually .

如果刀具前倾面与切屑（变形金属）底面之间的摩擦相当大，那么切屑进一步变形，这也叫做二次变形。

If the friction between the tool rake face and the underside of the chip ( deformed material ) is considerable , then the chip gets further deformed , which is termed as secondary deformation .

结果表明，在紫铜搅拌焊接过程中进行强制冷却，可以降低焊接过程中焊缝及热力影响区变形金属的温度，减小接头软化的程度和范围，提高搅拌摩擦焊接接头的性能。

The research results show that : the forced cooling during FSW of copper can decrease the temperature of weld zone and heat-mechanical affected zone during welding , minimize the soft zone width and weak degree , and increase the properties of FSW joint .

高温变形FeAl金属间化合物中的位错特征

Dislocation features in FeAl intermetallic compound after deformation at high temperature

为解决H型钢轧制缺陷问题，用塑性有限元软件建立了H型钢的轧制模型，模拟了轧制过程，并用热力耦合法分析了轧件的变形和金属流动情况和腹板的轧制力分布。

Rolling model of H beam was established through MSC Marc / AutoForge FEA software and rolling process was simulated to solve the defect problem for H beam . The metal flow in rolling process was simulated by thermo-mechanical coupled elastic-plastic element and the pressure distribution on web was given .

选择考虑冷轧带钢轧制过程变形区金属塑性变形和入、出口弹性变形的Bland-Ford-Hill模型作为冷轧过程控制轧制力模型并进行分析，确定出变形抗力和摩擦系数是影响轧制力最主要的两个因素。

The Bland-Ford-Hill model was used for rolling force calculation of process control of cold rolling . The plastic deformation in bite zone and elastic deformation at the entry and exit of bite zone were considered for the model calculation .

金属件变形对金属&陶瓷封接应力的影响

Effects of Metallic Parts Strain on Stress of Metal-Ceramic Seals

导流角对挤压变形中金属流动与缺陷的影响

Effect of guiding angle on metal flow and defects in extrusion deformation

切变形对金属组织和性能的影响

Influence of Shear Deformation on Metal Structure and Behaviours

轧制变形区金属质点加速度以及滑动率的探讨

Study on mass point acceleration and slip rate of metal in rolling deformation zone

连轧管变形区金属的塑性流动及应力分析

3-D Metal Flow and Stress Distribution in the Deformational Area of Continuous Seamless Tube Mill

建立了反映该变形过程金属流动规律的本构方程。

The constitutive equation , which reflects the metal flow rules during isothermal forging process , was developed .

板材的激光弯曲成形是一种利用高能激光束扫描金属板材表面产生非均匀分布的热应力，从而使板材发生塑性变形的金属板材柔性成形新工艺。

Laser sheet bending is a new metal forming process realized by thermal stresses resulted from the irradiation of laser beam scanning .

活塞环是一种具有较大向外扩张变形的金属弹性环，它被装配到剖面与其相应的环形槽内。

Piston ring is a metallic elastic ring with large deformation and outward expansion , which is assembled to the corresponding ring groove .

因此对于涉及复杂大变形的金属成形过程，难以用一成不变的单元网格把变形过程模拟到底。

Thus , it is difficult to simulate the whole metal forming process with a fixed mesh configuration for the complicated large deformation problems .

对常规轧制和交叉轧制时变形区金属流动特性进行了理论分析，并在二辊冷轧机上进行了试验。

A big flanged forgings stamping was studied by cross extruslon , as well as its technology , applience and feature of metallic flow .

在镦粗变形中金属的流动行为不仅影响变形抗力的大小，而且会影响变形工艺设计的准确性。

The flow behavior of metal during the upsetting will affect not only its resistance to deformation but also its accuracy of designed deformation process .

本文结合一些挤压和模锻件实例论述了切变形对金属组织和性能的影响。

In this paper , the influence of shear deformation on metal structure and behaviours is discussed with some practical examples of extrusion and die forging workpieces .

轧辊施加的压力使金属变形。金属的截面减小，长度增加，从而改变形状。

The compressive force exerted by the rollers causes the metal to deform . The metal is thus reduced in section , increased in length and finally changed in shape .

作为应用实例，计算了悬臂梁、厚圆板的弹性接触大变形和金属圆环弹塑性接触大变形问题，得到了令人满意的计算结果。

To show the . effectiveness of the method , problems of contact large deformation of cantilever beam , circular plate , as well as metal ring are computed . Compared with experiments , the results show good agreements .