相关实验视频

Updated: May 31, 2025

Experimental Procedure for Warm Spinning of Cast Aluminum Components

Experimental Procedure for Warm Spinning of Cast Aluminum Components

Published on: February 1, 2017

通过温度组合控制在两阶段多方向造过程中消除7085合金造的异质性

Xiao Yin¹, Wensheng Liu¹, Xin Tan¹

¹National Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, China.

Materials (Basel, Switzerland)

|January 25, 2025

概括

双阶段多向造 (MDF) 显著降低了7085合金的异构性,实现方向变化低于10%. 这种方法可以提高飞机应用的机械性能,而不会损害强度.

科学领域:

材料科学材料科学材料科学
金工业是金工业的一个方面.
机械工程机械工程

背景情况:

7085合金在航空航天应用中具有理想的性能.
大横截面造品表现出显著的机械异质性,特别是在垂直方向 (超过40%).
这种异构性限制了7085合金组件的有效利用.

研究的目的:

研究两级多向造 (MDF) 在降低7085合金的机械异构性方面的有效性.
为了比较同热中温复合材料MDF (MC-MDF) 和同热热MDF (H-MDF) 的微观结构和机械性能结果.
为了确定是否可以在不牺牲最终抗拉强度 (UTS) 的情况下实现异构性降低.

主要方法:

在7085合金金条上应用双阶段多向造 (MDF) 技术.
采用两种不同的温度组合:同热中温复合材料MDF (MC-MDF) 和同热热MDF (H-MDF).
进行三维 (3D) 微结构分析和评估机械性能 (UTS,YS,EL).

主要成果:

MC-MDF成功地将异构性降低到10%以下,而不会对UTS造成重大损失.
与H-MDF相比,MC-MDF样本显示出更高的脱位密度和增强的再结晶结构.
垂直方向延伸显著改善,降低方向性并增加造利用率.
MC-MDF导致产量强度 (YS) 较低,但工作硬化程度更高,延展性增加.

结论:

异热中温复合材料MDF (MC-MDF) 是一种高效的方法,用于减轻7085合金的机械异质性.
对于航空航天造品来说,MC-MDF提供了降低异构性,保持强度和提高可塑性的优越平衡.
微结构增强,包括更高的脱位密度和再结晶,支持MC-MDF加工7085合金的改善机械性能.

关键词:

这是一种Al-Zn-Mg-Cu合金.不同类型的异型性异型性微观结构的演化微观结构的演化多向造是指向不同方向的造.再结晶化,重新结晶化一致性是一致性.

更多相关视频

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions

A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions

Published on: April 4, 2017

相关概念视频

Temperature Dependent Deformation

Temperature Dependent Deformation

In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...

Steel Manufacturing

Steel Manufacturing

Steel manufacturing is a multi-stage process that begins by smelting iron ore into cast iron in a blast furnace. This initial stage involves layering iron ore with coke, a type of fuel, and crushed limestone within the furnace. The coke is ignited with a high volume of air, leading to the creation of carbon monoxide, which acts to reduce the iron ore to pure iron.
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...

Transmission Shafts: Problem Solving

Transmission Shafts: Problem Solving

Designing a solid shaft that transmits power from a motor to a machine tool involves a series of calculations to ensure the shaft can withstand the stresses applied by bending moments and torques. First, calculate the torque exerted on the gear, considering the power transmitted by the shaft and its rotational speed. Following this, compute the tangential forces acting on the gears, which directly relate to the torque and the gear radius.
Next, use bending moment diagrams for the shaft to...

Stress Concentrations in Circular Shafts

Stress Concentrations in Circular Shafts

Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...