Interpretation of hardness measurements applied for the determination of the strain rate sensitivity

P. Tasnadi, A. Juhász, N. Chinh, I. Kovacz

Research output: Contribution to journalArticle

Abstract

One of the most important characteristics of the deformation process is the strain rate sensitivity defined by m = (∂ln σ÷∂ln ε)ε. There are various proposals and experimental evidence that it can be evaluated from the hardness measurements. In the present paper a short discussion for the physical background is given. The evaluation of the strain rate sensitivity from the hardness measurement is interpreted by dimensional analysis and on the basis of a simple model for the stress field developing under the indenter. Using this model the indentation length - time function can be determined and it is shown that it gives us a new possibility for the determination of the activation energy of the process.

Original languageEnglish
Pages (from-to)169-176
Number of pages8
JournalMechanical and corrosion properties. Series A, Key engineering materials
Volume97-98
Publication statusPublished - 1994

Fingerprint

Strain rate
Hardness
Indentation
Activation energy

ASJC Scopus subject areas

  • Engineering(all)

Cite this

@article{2d0a593620434eb88edbe77584741b9c,
title = "Interpretation of hardness measurements applied for the determination of the strain rate sensitivity",
abstract = "One of the most important characteristics of the deformation process is the strain rate sensitivity defined by m = (∂ln σ÷∂ln ε)ε. There are various proposals and experimental evidence that it can be evaluated from the hardness measurements. In the present paper a short discussion for the physical background is given. The evaluation of the strain rate sensitivity from the hardness measurement is interpreted by dimensional analysis and on the basis of a simple model for the stress field developing under the indenter. Using this model the indentation length - time function can be determined and it is shown that it gives us a new possibility for the determination of the activation energy of the process.",
author = "P. Tasnadi and A. Juh{\'a}sz and N. Chinh and I. Kovacz",
year = "1994",
language = "English",
volume = "97-98",
pages = "169--176",
journal = "Key Engineering Materials",
issn = "1013-9826",
publisher = "Trans Tech Publications",

}

TY - JOUR

T1 - Interpretation of hardness measurements applied for the determination of the strain rate sensitivity

AU - Tasnadi, P.

AU - Juhász, A.

AU - Chinh, N.

AU - Kovacz, I.

PY - 1994

Y1 - 1994

N2 - One of the most important characteristics of the deformation process is the strain rate sensitivity defined by m = (∂ln σ÷∂ln ε)ε. There are various proposals and experimental evidence that it can be evaluated from the hardness measurements. In the present paper a short discussion for the physical background is given. The evaluation of the strain rate sensitivity from the hardness measurement is interpreted by dimensional analysis and on the basis of a simple model for the stress field developing under the indenter. Using this model the indentation length - time function can be determined and it is shown that it gives us a new possibility for the determination of the activation energy of the process.

AB - One of the most important characteristics of the deformation process is the strain rate sensitivity defined by m = (∂ln σ÷∂ln ε)ε. There are various proposals and experimental evidence that it can be evaluated from the hardness measurements. In the present paper a short discussion for the physical background is given. The evaluation of the strain rate sensitivity from the hardness measurement is interpreted by dimensional analysis and on the basis of a simple model for the stress field developing under the indenter. Using this model the indentation length - time function can be determined and it is shown that it gives us a new possibility for the determination of the activation energy of the process.

UR - http://www.scopus.com/inward/record.url?scp=0028735393&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028735393&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0028735393

VL - 97-98

SP - 169

EP - 176

JO - Key Engineering Materials

JF - Key Engineering Materials

SN - 1013-9826

ER -