Phase composition of scale of hot-rolled automobile sheet steel 08Yu

1997 ◽  
Vol 39 (12) ◽  
pp. 532-533
Author(s):  
Yu. A. Mukhin ◽  
A. V. Merzlyakov ◽  
A. F. Pimenov ◽  
A. P. Shapovalov
Keyword(s):  
Phase Composition ◽  
Sheet Steel ◽  
Automobile Sheet ◽  
Steel 08Yu ◽  
Hot Rolled

scholarly journals Stabilization in Strength of Hot-rolled Sheet Steel Strengthened by Nanometer-sized Carbides

2007 ◽  
Vol 93 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Yoshimasa FUNAKAWA ◽  
Kazuhiro SETO
Keyword(s):  
Sheet Steel ◽  
Rolled Sheet ◽  
Hot Rolled

scholarly journals Development of High Strength Hot-rolled Sheet Steel Consisting of Ferrite and Nanometer-sized Carbides

2004 ◽  
Vol 44 (11) ◽  
pp. 1945-1951 ◽  
Author(s):  
Yoshimasa Funakawa ◽  
Tsuyoshi Shiozaki ◽  
Kunikazu Tomita ◽  
Tetsuo Yamamoto ◽  
Eiji Maeda
Keyword(s):  
Sheet Steel ◽  
High Strength ◽  
Rolled Sheet ◽  
Hot Rolled

Determination of the length of hot-rolled sheet steel in a coil by the number of loops

Metallurgist ◽  
1965 ◽  
Vol 9 (4) ◽  
pp. 217-218
Author(s):  
N. S. Khotyushin ◽  
G. M. Popov
Keyword(s):  
Sheet Steel ◽  
Rolled Sheet ◽  
Hot Rolled

Influence of Thermal Cyclic Deformation and Hardening Heat Treatment on the Structure and Properties of Steel 10

2015 ◽  
Vol 788 ◽  
pp. 187-193 ◽  
Author(s):  
Aleksandr Prudnikov ◽  
Marina Popova ◽  
Vladimir Prudnikov
Keyword(s):  
Heat Treatment ◽  
Cyclic Deformation ◽  
Sheet Steel ◽  
Strength Characteristics ◽  
Rolled Sheet ◽  
Structure And Properties ◽  
Fine Grained ◽  
Fine Grained Structure ◽  
Hot Rolled ◽  
Hardening Heat Treatment

The results of the influence of preliminary thermal cyclic deformation and subsequent hardening heat treatment on the microstructure and mechanical properties of hot-rolled sheet steel 10 are presented. It is shown that the use of preliminary thermal cyclic deformation of the steel 10 stock material results in a fine-grained structure of a hot-rolled sheet (3 mm thick) produced by an industrial technology. Deformation occurred at a temperature above AC3 (1250 °C), with cooling to 200-300 °C during 10 cycles and the deformation ratio per cycle being 6-8 %. Such a treatment before sheet hot-rolling allows increasing the strength characteristics (tensile strength, yield strength) by almost 30 %. It has been established that the use of subsequent heat treatment (quenching, 900 °C, water and tempering 1 h, 600 °C) leads to a further increase in strength characteristics by 15-20% while maintaining a sufficient level of ductility of sheet steel.

MECHANICAL CHARACTERIZATION OF NOTCHED HOT ROLLED MULTI-PHASE STEEL

2017 ◽  
Vol 41 (1) ◽  
pp. 39-50
Author(s):  
Ke Niu ◽  
Abdolhamid Akbarzadeh ◽  
Zengtao Chen
Keyword(s):  
Crack Formation ◽  
Sheet Steel ◽  
Rolling Direction ◽  
Experimental Studies ◽  
Image Correlation ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Test ◽  
Correlation Technique ◽  
Stretch Flanging ◽  
Hot Rolled

This paper presents a series of experimental and numerical studies on Hot Rolled Stretch Flanging steels. This study focuses on four prototyped Hot-Rolled Stretch Flanging steels (HR780SF). Circular- notched sheet steel samples are used to induce different stress triaxiality levels in the rolling direction of sheet materials. Digital image correlation technique measures the local true strain during the deformation process of the notched samples in uniaxial tensile test. The microstructure of the notched samples is examined to evaluate the effect of geometrical features of circular notches on the microstructural evolution during the plastic deformation. Finally, the numerical results obtained via a finite element simulation are validated by the collected experimental data. Our experimental studies reveal the possibility of crack formation along the width of HR780SF steels during the mechanical load. The crack formation, which deteriorates the structural performance of hot rolled steels, can be avoided by the heat treatment of samples prior to the mechanical tests. In addition, it is found that the effect of notch geometry on the stress state is much more considerable at the notch edge than the notch center.

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