Portevin-Le Châtelier type plastic instabilities in depth sensing macro-indentation

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Depth-sensing indentation at constant loading rate was applied to investigate the Portevin-Le Châtelier effect. Comparison of the different testing methods was achieved using representative strain and stress quantities. The depth of the dynamic strain ageing shows a good coincidence for Vickers and conical indentations, and for the large strain region of the tension tests. Tests with cylindrical indenters and tension experiments show a transient and a stationary behaviour for small and for large strains, respectively. The transient part can be interpreted by taking into account the free-flight time of dislocations in the Kubin-Estrin model.

Original languageEnglish
Pages (from-to)255-260
Number of pages6
JournalMaterials Science and Engineering A
Volume325
Issue number1-2
DOIs
Publication statusPublished - Feb 28 2002

Fingerprint

indentation
Indentation
Macros
plastics
Plastics
free flight
flight time
loading rate
precipitation hardening
Free flight
Aging of materials
Testing
Experiments

Keywords

  • Depth-sensing indentation
  • Load control
  • Portevin-Le Châtelier effect

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

@article{8e2a0cef57a2478db29c7b01add53660,
title = "Portevin-Le Ch{\^a}telier type plastic instabilities in depth sensing macro-indentation",
abstract = "Depth-sensing indentation at constant loading rate was applied to investigate the Portevin-Le Ch{\^a}telier effect. Comparison of the different testing methods was achieved using representative strain and stress quantities. The depth of the dynamic strain ageing shows a good coincidence for Vickers and conical indentations, and for the large strain region of the tension tests. Tests with cylindrical indenters and tension experiments show a transient and a stationary behaviour for small and for large strains, respectively. The transient part can be interpreted by taking into account the free-flight time of dislocations in the Kubin-Estrin model.",
keywords = "Depth-sensing indentation, Load control, Portevin-Le Ch{\^a}telier effect",
author = "Z. Kov{\'a}cs and N. Chinh and J. Lendvai and G. V{\"o}r{\"o}s",
year = "2002",
month = "2",
day = "28",
doi = "10.1016/S0921-5093(01)01445-9",
language = "English",
volume = "325",
pages = "255--260",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Portevin-Le Châtelier type plastic instabilities in depth sensing macro-indentation

AU - Kovács, Z.

AU - Chinh, N.

AU - Lendvai, J.

AU - Vörös, G.

PY - 2002/2/28

Y1 - 2002/2/28

N2 - Depth-sensing indentation at constant loading rate was applied to investigate the Portevin-Le Châtelier effect. Comparison of the different testing methods was achieved using representative strain and stress quantities. The depth of the dynamic strain ageing shows a good coincidence for Vickers and conical indentations, and for the large strain region of the tension tests. Tests with cylindrical indenters and tension experiments show a transient and a stationary behaviour for small and for large strains, respectively. The transient part can be interpreted by taking into account the free-flight time of dislocations in the Kubin-Estrin model.

AB - Depth-sensing indentation at constant loading rate was applied to investigate the Portevin-Le Châtelier effect. Comparison of the different testing methods was achieved using representative strain and stress quantities. The depth of the dynamic strain ageing shows a good coincidence for Vickers and conical indentations, and for the large strain region of the tension tests. Tests with cylindrical indenters and tension experiments show a transient and a stationary behaviour for small and for large strains, respectively. The transient part can be interpreted by taking into account the free-flight time of dislocations in the Kubin-Estrin model.

KW - Depth-sensing indentation

KW - Load control

KW - Portevin-Le Châtelier effect

UR - http://www.scopus.com/inward/record.url?scp=0037186708&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037186708&partnerID=8YFLogxK

U2 - 10.1016/S0921-5093(01)01445-9

DO - 10.1016/S0921-5093(01)01445-9

M3 - Article

AN - SCOPUS:0037186708

VL - 325

SP - 255

EP - 260

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

IS - 1-2

ER -