Effect of Tensile Pre-strain and Specimen Orientation on Tearing Resistance Parameters of DP 780 Steel Sheet Determined Using Essential Work of Fracture Method

被引：0
作者：
Bhowmick, A. D. [1 ]
Sarkar, R. [1 ,2 ]
Chandra, S. K. [1 ]
De, P. S. [1 ,3 ]
Chakraborti, P. C. [1 ]
机构：
[1] Jadavpur Univ, Met & Mat Engn Dept, Kolkata 700032, India
[2] Deakin Univ Geelong, Inst Frontier Mat, Waurn Ponds Campus, Geelong, Vic 3216, Australia
[3] Indian Inst Technol, Dept Engn Design, Madras 600036, Tamil Nadu, India
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2023年 / 32卷 / 15期
关键词：
CTOA; dual-phase steel sheet; notch root radius; pre-strain; specimen orientation; TIP-OPENING ANGLE; STRESS DUCTILE FRACTURE; TOUGHNESS; THICKNESS; CTOA; PRESTRAIN; MECHANICS;
D O I：
10.1007/s11665-022-07583-w
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Essential work of fracture (EWF) concept has been used to characterize the tearing resistance of a 1-mm-thick automotive grade dual-phase 780 steel sheet. The present study has been done to observe the effect of tensile pre-strain, specimen orientation and notch root radius on tearing resistance parameters obtained from EWF testing of double-edge notched tensile (DENT) specimens. Additionally, the estimated crack tip opening angle (CTOA, psi(e)) obtained through EWF testing has been compared with its fracture mechanics counterpart, i.e., stable crack tip opening angle value (phi(c)) obtained via an experimental route using DENT specimens, adopting the essence of the standard CTOA testing procedure prescribed in ASTM 2472.
引用
收藏
页码：6866 / 6875
页数：10
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