The Correlation Between Hardness (Mean Contact Pressure by a Spherical Indenter) and Flow Stress

スポンサーリンク

概要

• 論文の詳細を見る

• This paper deals with the correlation between hardness (mean contact pressure) P_m by a spherical indenter and flow stress Y under the uniaxial stress field. Firstly, the mean strain of the deformed material around the indentation ε_<ic>, which corresponds to the total strain of the uniaxial stress field, is defined following Tabor's idea. Secondly, hardness/flow stress ratio C is obtained experimentally for C =9.8 P_m/Y, where Y is in MPa, and formulated for two conditions of material (1) elastic-plastic transient process : C=1.1+(2/3) ln(ε_<ic> E_s/Y), (2) ideal-plastic deformation : C=2.9; E_s is the Young's modulus of a material. Finally, by combining these relations, a method of estimating the flow stress-strain characteristic curve by spherical indentation is proposed. In addition, an example of estimation of the flow stress-strain characteristic curve of SUS 304 is shown over a wide range of strain by means of the proposed method.

• 一般社団法人日本機械学会の論文
• 1988-01-15

著者

• Ishibashi Tatsuya

  Faculty Of Engineering Niigata University

• ISHIBASHI Tatsuya

  Faculty of Engineering,Niigata University

関連論文

• Subjective Evaluation of the Rustling Sound of Fabrics
• Oscillations Caused by Solid Friction : Part 4,Experimental Study
• The Influence of Mechanical Properties of Spheical Indenters on Hardness
• The Correlation Between Hardness (Mean Contact Pressure by a Spherical Indenter) and Flow Stress
• Oscillations Caused by Solid Friction : Part 3,In the Case of Maximum Static Friction Different from Kinetic Friction without Slipping

スポンサーリンク