Measurement of True Stress-True Strain Curve up to Large Strain Extent at Elevated Temperature in Ti-6Al-4V Alloy with Image Analysis Tensile Test Method

2021 ◽  
Vol 62 (731) ◽  
pp. 177-182
Author(s):  
Atsushi ITO ◽  
Masatoshi YAMATO ◽  
Shiro TORIZUKA
Keyword(s):  
Image Analysis ◽  
Elevated Temperature ◽  
Tensile Test ◽  
Large Strain ◽  
True Strain ◽  
Strain Curve ◽  
True Stress ◽  
Test Method ◽  
True Strain Curve

scholarly journals Tensile Test Method with Image Analysis to Obtain True Stress - True Strain Curve Up to Fracture

2012 ◽  
Vol 98 (8) ◽  
pp. 415-424 ◽  
Author(s):  
Naruhito Murayama ◽  
Shiro Torizuka ◽  
Toshihiro Hanamura ◽  
Masana Imagumbai
Keyword(s):  
Image Analysis ◽  
Tensile Test ◽  
True Strain ◽  
Strain Curve ◽  
True Stress ◽  
Test Method ◽  
True Strain Curve

Uniaxial true stress-true strain curve for a ductile metal

1993 ◽  
Vol 140 (2) ◽  
pp. 153-158 ◽  
Author(s):  
Wei Qin Shen ◽  
Norman Jones
Keyword(s):  
True Strain ◽  
Strain Curve ◽  
True Stress ◽  
True Strain Curve ◽  
Ductile Metal

Miniature Test Technique for Acquiring True Stress–Strain Curves for a Large Range of Strains Using a Tensile Test and Inverse Finite Element Method

2011 ◽  
Vol 110-116 ◽  
pp. 4204-4211 ◽  
Author(s):  
Hafeez Farrukh ◽  
M.N. Desmukh ◽  
Husain Asif ◽  
D.K. Sehgal
Keyword(s):  
Finite Element ◽  
Tensile Test ◽  
True Strain ◽  
Element Model ◽  
Conventional Technique ◽  
True Stress ◽  
Constitutive Behavior ◽  
Test Technique ◽  
Miniature Specimen ◽  
Strain Relationship

The paper presents a non conventional technique to predict the constitutive behavior of materials by assessing the true stress–true strain relationship through miniature specimen tests. The miniature test was conducted on two different types of steel ring specimens (outer diameter14mm, inner diameter 8mm, thickeness 0.5mm) with V-notch (1mm depth) added diametrically to it. A finite element model was developed and validated to calculate the load–deflection curve obtained from the miniature specimen experiment. The constitutive behavior assigned to the specimen for the calculations was determined from the standard tensile test. Using an inverse methodology, it was possible to show that the constitutive behavior from the miniature tests using inverse FE procedure, and that from the conventional standard ASTM test bears close resemblance.

Mechanical Behavior of Materials under Tensile Loads

2004 ◽  
pp. 13-31
Keyword(s):  
Tensile Test ◽  
Mechanical Behavior ◽  
Tensile Deformation ◽  
True Strain ◽  
Strain Curve ◽  
Tensile Specimen ◽  
Stress Strain Curve ◽  
Stress Strain ◽  
Mathematical Expressions ◽  
Reduction In Area

Abstract This chapter focuses on mechanical behavior under conditions of uniaxial tension during tensile testing. It begins with a discussion on the parameters that are used to describe the engineering stress-strain curve of a metal, namely, tensile strength, yield strength or yield point, percent elongation, and reduction in area. This is followed by a section describing the parameters determined from the true stress-true strain curve. The chapter then presents the mathematical expressions for the flow curve. Next, it reviews the effect of strain rate and temperature on the stress-strain curve. The chapter then describes the instability in tensile deformation and stress distribution at the neck in the tensile specimen. It discusses the processes involved in ductility measurement and notch tensile test in tensile specimens. The parameter that is commonly used to characterize the anisotropy of sheet metal is covered. Finally, the chapter covers the characterization of fractures in tensile test specimens.

Investigation on Work Hardening Behavior of Nickel-Base Superalloy during Hot Working Process by EBSD

2014 ◽  
Vol 1077 ◽  
pp. 50-55
Author(s):  
Shuang Fang ◽  
Min Cong Zhang ◽  
Qiu Ying Yu ◽  
Shu Yun Wang ◽  
Chun Xiao Cao
Keyword(s):  
Slip System ◽  
True Strain ◽  
Strain Curve ◽  
True Stress ◽  
Strain Level ◽  
Nickel Base Superalloy ◽  
Hardening Behavior ◽  
Nickel Base ◽  
Base Superalloy ◽  
Peak Value

The Nickel-base superalloy samples were prepared by the isothermal forging in strain rate 1s-1 at deformation temperature 1070°C with different strain levels. The EBSD was carried out in order to investigate the microstructural changes that took place due to strain level. The result is the samples has no apparent dynamic recrystallization behavior in hot deformation in 1s-1 at 1070°C. The true stress-true strain curve has two peak values in the strain level of 20% and 60%, and one valley value in the strain level of 50%. The first peak value is result in the activation of slip system and the beginning of recrystallization and the second peak value of the true stress-true strain curve is result in the inhibition of activation of slip system and grain growth by the dislocation density. The work hardening behavior of P/M Nickel-base superalloy may be related to the size ratio of γ’ phase with grain size.

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