Achieving superplasticity and superplastic forming through severe plastic deformation

M. Furukawa, Z. Horita, T. G. Langdon

研究成果: ジャーナルへの寄稿Conference article

2 引用 (Scopus)

抄録

The application of severe plastic deformation to metals provides a convenient procedure for achieving nanometer and submicrometer microstructures. Several different processing methods are available but Equal-Channel Angular Pressing (ECAP) is especially attractive because it provides an opportunity for preparing relatively large bulk samples. This paper describes the use of ECAP in preparing materials with ultrafine grain sizes and the subsequent properties of these materials at elevated temperatures. It is demonstrated that, provided precipitates are present to retain these small grain sizes at the high temperatures where diffusion is reasonably rapid, it is possible to achieve remarkably high superplastic elongations in the as-pressed materials and there is a potential for making use of this processing procedure to develop a superplastic forming capability at very rapid strain rates.

元の言語英語
ページ(範囲)B8.5.1-B8.5.12
ジャーナルMaterials Research Society Symposium - Proceedings
634
出版物ステータス出版済み - 1 1 2001
イベントStructure and Mechanical Properties of Nanophase Materials- Theory and Computer Si,ulation v.s Experiment - Boston, MA, 米国
継続期間: 11 28 200011 30 2000

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superplastic forming
superplasticity
Superplasticity
pressing
plastic deformation
Equal channel angular pressing
Plastic deformation
grain size
elongation
strain rate
precipitates
Processing
microstructure
Strain rate
Precipitates
Elongation
Metals
metals
Temperature
Microstructure

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Achieving superplasticity and superplastic forming through severe plastic deformation. / Furukawa, M.; Horita, Z.; Langdon, T. G.

:: Materials Research Society Symposium - Proceedings, 巻 634, 01.01.2001, p. B8.5.1-B8.5.12.

研究成果: ジャーナルへの寄稿Conference article

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N2 - The application of severe plastic deformation to metals provides a convenient procedure for achieving nanometer and submicrometer microstructures. Several different processing methods are available but Equal-Channel Angular Pressing (ECAP) is especially attractive because it provides an opportunity for preparing relatively large bulk samples. This paper describes the use of ECAP in preparing materials with ultrafine grain sizes and the subsequent properties of these materials at elevated temperatures. It is demonstrated that, provided precipitates are present to retain these small grain sizes at the high temperatures where diffusion is reasonably rapid, it is possible to achieve remarkably high superplastic elongations in the as-pressed materials and there is a potential for making use of this processing procedure to develop a superplastic forming capability at very rapid strain rates.

AB - The application of severe plastic deformation to metals provides a convenient procedure for achieving nanometer and submicrometer microstructures. Several different processing methods are available but Equal-Channel Angular Pressing (ECAP) is especially attractive because it provides an opportunity for preparing relatively large bulk samples. This paper describes the use of ECAP in preparing materials with ultrafine grain sizes and the subsequent properties of these materials at elevated temperatures. It is demonstrated that, provided precipitates are present to retain these small grain sizes at the high temperatures where diffusion is reasonably rapid, it is possible to achieve remarkably high superplastic elongations in the as-pressed materials and there is a potential for making use of this processing procedure to develop a superplastic forming capability at very rapid strain rates.

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