Innovative Development of High Strength Sheet Steel for Automobile Weight Reduction

2018 ◽  
Vol 87 (2) ◽  
pp. 144-148 ◽  
Author(s):  
Yoshimasa FUNAKAWA
Keyword(s):  
Weight Reduction ◽  
Sheet Steel ◽  
High Strength ◽  
Innovative Development

scholarly journals Influence of Fe Oxidation on Selective Oxidation Behavior of Si and Mn Added in High Strength Sheet Steel

2013 ◽  
Vol 99 (3) ◽  
pp. 221-227 ◽  
Author(s):  
Yusuke Fushiwaki ◽  
Yasunobu Nagataki ◽  
Hideki Nagano ◽  
Wataru Tanimoto ◽  
Yoshiharu Sugimoto
Keyword(s):  
Selective Oxidation ◽  
Oxidation Behavior ◽  
Sheet Steel ◽  
High Strength ◽  
Fe Oxidation

Experiment and FE Analysis of Compression of Thick Ring Filled with Oil

2018 ◽  
Vol 767 ◽  
pp. 141-148
Author(s):  
Yoshiki Tatematsu ◽  
Mitsuka Morimoto ◽  
Kazuhiko Kitamura
Keyword(s):  
Weight Reduction ◽  
High Strength Steel ◽  
Metal Flow ◽  
High Strength ◽  
Fe Analysis ◽  
Inner Diameter ◽  
Save Energy ◽  
The Ideal

Reducing automobile weight has been necessarily accelerated to save energy and improve drivability. Accordingly, use of high strength steel and hollow sections help in weight reduction. In this study, the effect of trapped oil has been investigated to improve the metal flow in upsetting of a hollow workpiece using no mandrel. It was found that the ideal deformation without friction between the dies and the workpiece was nearly achieved when a low and thick ring with trapped oil was upset. The inner diameter of the oil-filled ring was expanded more than that of the benchmark ring. The effect of the expansion of the ring and the reduction of the friction proved helpful in trial forming of a gear preform.

Analysis of Orange Peel Defects on Hot-Dip Galvanized High Strength Low Alloy Steel

2014 ◽  
Vol 1004-1005 ◽  
pp. 221-226
Author(s):  
Li Hui Wang ◽  
Di Tang ◽  
Xiang Dong Liu ◽  
Yan Wen Zhang ◽  
Shi Zheng Zhou
Keyword(s):  
Yield Point ◽  
Hsla Steel ◽  
Sheet Steel ◽  
Rolling Direction ◽  
Orange Peel ◽  
High Strength ◽  
Electron Back Scatter Diffraction ◽  
Steel Rolling ◽  
Yield Point Elongation ◽  
Skin Rolling

The surface of hot-dip galvanized high strength low alloy (HSLA) steel easily occurs orange peel in the deformation process. On the other hand, the defects possess a specific directivity and sits at approximately a 45-degree angle to the sheet steel rolling direction. The microstructures and properties of steel specimens with the orange peel defects and the normal were analyzed, which results showed that their microstructures consist of ferrite and few granular pearlite. The yield point elongation of the HSLA steel resulted in the orange peel defects on the surface of sheet stamping and it is associated with skin rolling and stretch rolling process. Further studied on the fine microstructures by means of SEM and electron back scatter diffraction (EBSD) techniques, which was apparent for the defect steel that the orange peel defects were resulted from weak favorable {111} texture might be the key factors aggravating the formation of orange peel defects. It can be concluded that the formation of Cottrell atmospheres caused the yield point elongation by the interaction between dislocation and diffusive solute atoms as basic reason and the directivity of the orange peel defects was related with the LUDERS slip forming. The yield point elongation can be eliminated to avoid the orange peel defects beyond to 1.8% skin-rolling and stretch rolling method with an appropriate annealing technology.

Experimental Investigation on Forming of Tailor Welded Blanks

2017 ◽  
Vol 885 ◽  
pp. 147-152
Author(s):  
Gábor Béres ◽  
József Danyi
Keyword(s):  
Automotive Industry ◽  
Weight Reduction ◽  
Laser Beam Welding ◽  
High Strength Steels ◽  
High Strength ◽  
Drawing Ratio ◽  
Steel Component ◽  
Tailor Welded Blanks ◽  
Passenger Safety ◽  
Basic Parameters

One of the main aims of automotive developers is vehicle weight reduction. There are many well known ways related to weight reduction, for example using thinner and higher strength sheet materials, or using of formed tubes as load-bearing elements in car body structures. In the field of modern automotive industry we must not forget that the heavy loaded, and in passenger-safety aspect relevant elements frequently consist of tailor welded blanks (TWBs). The components could have different strength or thickness or coatings too. Therefore, certain segments of the welded elements could behave differently during forming. Generally the higher strength coupled with less formability, but in the case of welded blanks, the interaction of each parts are unknown in many aspects.This paper presents the results of the experimental work, carried out to evaluate the drawability of tailor welded blanks. The welded blanks were prepared by laser beam welding technology. The blanks consisted of a well drawing component, marked DC04, and a high strength steel component. The applied high strength steels are DP600, DP800 and DP1000 types. Our current object was to determine some basic parameters of deep-drawability as a typical sheet metal forming operation. It can be stated that as the strength ratio (SR) is increasing between the segments, the limiting drawing ratio is decreasing.

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

Weight Reduction of Connecting Rod by Using High Strength Steel

2015 ◽  
Author(s):  
Tatsushi Kaiho ◽  
Shigenori Yamada ◽  
Takayuki Tsuruda ◽  
Manabu Kubota ◽  
Shinya Teramoto
Keyword(s):  
Weight Reduction ◽  
High Strength Steel ◽  
High Strength ◽  
Connecting Rod

ZIRTEN

Alloy Digest ◽  
1969 ◽  
Vol 18 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Service Life ◽  
Physical Properties ◽  
Structural Steel ◽  
Tensile Properties ◽  
Weight Reduction ◽  
High Strength ◽  
Heat Treating

Abstract ZIRTEN is a versatile, corrsion resisting, high-strength low-alloy structural steel recommended for weight reduction or increase in service life. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-236. Producer or source: The Japanese Steel Works Ltd.

USS COR-TEN

Alloy Digest ◽  
1954 ◽  
Vol 3 (4) ◽  
Keyword(s):  
United States ◽  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Weight Reduction ◽  
Atmospheric Corrosion ◽  
High Strength ◽  
Heat Treating ◽  
Corrosion Resistant ◽  
United States Steel Corporation

Abstract U.S.S. COR-TEN is a corrosion resistant high-strength steel of low alloy content, intended primarily for weight reduction, or longer life, by means of greater strength and enhanced atmospheric corrosion resistance in applications involving fabrication by forming and welding. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-17. Producer or source: United States Steel Corporation.

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