A multiscale approach for the deformation mechanism in pearlite microstructure: Experimental measurements of strain distribution using a novel technique of precision markers

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:590

Article

Tanaka, Masaki¹  Yoshimi, Yusuke¹  Higashida, Kenji¹  Shimokawa, Tomotsugu²  Ohashi, Tetsuya³ 

[1] Kyushu Univ, Dept Mat Sci & Engn, Nishi Ku, Fukuoka 8190395, Japan

[2] Kanazawa Univ, Sch Mech Engn, Kanazawa, Ishikawa 9201192, Japan

[3] Kitami Inst Technol, Kitami, Hokkaido 0908507, Japan

关键词: Steels;    Local deformation;    High-precision markers;    Wire drawing;   

DOI  :  10.1016/j.msea.2013.09.072

来源: Elsevier

【 摘 要 】

Plastic deformation of fully pearlitic steels was investigated using a multiscale approach: experimentally, the finite element method and molecular dynamics. This paper is the first in a series of three papers demonstrating the strain distribution in uniaxial tensile deformation with high-precision markers drawn by electron beam lithography. Strain was measured at loads of 1.98 kN, 2.21 kN and 2.28 kN in tensile deformation. Scanning electron microscopy (SEM) images and strain maps show the plastic deformation of cementite lamellae and homogenous plastic deformation under uniaxial tensile deformation in the area where the cementite lamellae are aligned in the tensile direction. The areas where strain was enhanced were both block/colony boundaries and the areas where the cementite lamellae are inclined approximately 45 degrees to the tensile direction. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

Free