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相关概念视频

Plasticity00:58

Plasticity

Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
Plastic Behavior01:21

Plastic Behavior

A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and reloaded.
Superplasticizers01:30

Superplasticizers

Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...

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相关实验视频

Updated: May 8, 2026

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)
08:29

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)

Published on: January 7, 2019

一种高延展率的超塑性陶.

B N Kim1, K Hiraga, K Morita

  • 1National Institute for Materials Science, Sengen, Tsukuba, Ibaraki, Japan. KIM.Byung-Nam@nims.go.jp

Nature
|September 21, 2001
PubMed
概括
此摘要是机器生成的。

这项研究表明,新型陶复合材料具有高延展率的超塑性,能够以快速的速度显著塑料变形. 这一突破为先进的陶成形技术开辟了可能性.

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Fused Filament Fabrication (FFF) of Metal-Ceramic Components
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Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography
06:53

Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography

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相关实验视频

Last Updated: May 8, 2026

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)
08:29

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)

Published on: January 7, 2019

Fused Filament Fabrication (FFF) of Metal-Ceramic Components
08:43

Fused Filament Fabrication (FFF) of Metal-Ceramic Components

Published on: January 11, 2019

Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography
06:53

Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography

Published on: January 25, 2019

科学领域:

  • 材料科学 材料科学 材料科学
  • 陶工程 陶工程
  • 机械工程 机械工程

背景情况:

  • 高拉伸率超塑性对于工程材料的形状形成至关重要,但在陶中是有限的.
  • 现有的陶超塑性仅限于低拉伸率 (10−5到10−4s−1) 和容易因空洞而导致过早故障.
  • 和合金表现出高应变率的超塑性,与大多数氧化物和化物不同.

研究的目的:

  • 在高拉伸率下研究新型陶复合材料的超塑性.
  • 为了克服传统陶中低应变率超塑性和颗粒间化的局限性.
  • 探索陶材料中先进形状成形技术的潜力.

主要方法:

  • 一种复合陶材料的制造,包括四角氧氧化物,酸旋和α-相.
  • 对复合材料的超塑性变形能力的测试,应变速率高达1s-1.1.
  • 变形材料的微观结构分析,以了解底层的变形机制.

主要成果:

  • 陶复合材料在高达1s-1.1的拉伸率下表现出超塑性.
  • 在0.4s-1.1的延展率下,获得了超过1.050%的大拉伸延伸.
  • 超塑性归因于有限的颗粒生长和在氧化阶段的脱位诱导的塑性.

结论:

  • 开发的陶复合材料克服了以前的局限性,实现了高拉伸率超塑性.
  • 这些发现表明,将塑形技术应用于陶材料是一个可行的途径.
  • 这项研究对先进的陶制造业的未来具有重大前景.