合金板中的同位素行为机制由轴性闭合模具滚动板形成
Jungang Nan1, Dong Liu1,2, Yonghao Zhang1
1School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
Materials (Basel, Switzerland)
|June 13, 2025
概括
这项研究研究了TC11合金变形使用轴闭模 (ACDR). 通过ACDR处理,可以产生各种质地强度和方向,从而使材料具有高度同位素拉伸性能.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 金工业是金工业的一个方面.
背景情况:
- 在航空航天应用中,TC11合金至关重要.
- 在像ACDR这样的过程中了解其变形行为对于优化性能至关重要.
- 质地演变显著影响材料特性.
研究的目的:
- 为了研究TC11合金在ACDR过程中的扭转行为.
- 使用EBSD分析α和β阶段的纹理演变 (ODF地图).
- 为了将纹理特征与由此产生的拉伸性能相关联.
主要方法:
- 对 ACDR 过程的数值模拟.
- 电子反向散射衍射 (EBSD) 用于纹理分析.
- 拉伸测试用于评估强度和可塑性等性.
主要成果:
- 扭曲行为,角和扭曲度随着变形而增加.
- 在α阶段观察到不同的强度的明显纹理 ({0001} <21 ̄1 ̄0>, {011 ̄0} <21 ̄1 ̄0>, {1 ̄21 ̄0} <101 ̄0>, {12 ̄12 ̄} <12 ̄16>).
- {001} <100>, {110} <11 ̄0>, {110} <001> 在β阶段发现的纹理,总体影响较弱.
- 在辐射和接触拉伸特性 (>99%强度,>95%可塑性) 中实现了高同位素性.
结论:
- 在TC11合金中,ACDR处理会诱导复杂的纹理分布.
- 不同的纹理强度和方向导致拉伸性能具有显著的同位素性.
- 这项研究为TC11合金组件的ACDR优化提供了洞察力.
相关概念视频
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
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Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
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01:10Deformation in a Circular Shaft
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One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
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01:15Thin-Walled Hollow Shafts
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In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution...
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01:16Torsion of Noncircular Members
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Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...
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01:16Eccentric Axial Loading in a Plane of Symmetry
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Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
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01:20Plastic Deformation in Circular Shafts
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When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...
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