Tensile Testing of Ultra-Fine Grained Extra Deep Drawing Steel Sheets

2017 ◽  
Vol 4 (2) ◽  
pp. 590-595 ◽  
Author(s):  
R. Pratoori ◽  
T.S. Maddukuri ◽  
A.K. Sannidhi ◽  
Y.P. Singh ◽  
B. Gundepudi ◽  
...  
Keyword(s):  
Deep Drawing ◽  
Tensile Testing ◽  
Fine Grained ◽  
Steel Sheets

Formability and Process Conditions of Magnesium Alloy Sheets

2005 ◽  
Vol 488-489 ◽  
pp. 453-456 ◽  
Author(s):  
Shi Hong Zhang ◽  
Yong Chao Xu ◽  
G. Palumbo ◽  
S. Pinto ◽  
Luigi Tricarico ◽  
...  
Keyword(s):  
Deep Drawing ◽  
Tensile Tests ◽  
Process Conditions ◽  
Drawing Ratio ◽  
Temperature Range ◽  
Fine Grained ◽  
Axial Tensile ◽  
Die Surface ◽  
Lower Temperature Range ◽  
Lower Temperature

Comparing the formability with each other, extrusion and various rolling experiments were carried out to make fine-grained AZ31 Mg sheets, and uni-axial tensile tests were carried out at different strain rates and temperatures to investigate the effect of different variables. A warm deep drawing tool setup with heating elements, which were distributed under the die surface and inside the blank holder, was designed and manufactured, and deep drawing was performed. Extruded Mg alloy AZ31 sheets exhibit the best deep drawing ability when working in the temperature range 250-350°C. Extruded and rolled sheets of 0.8 mm thick were also deep drawn in the lower temperature range 105-170°C，showing good formability and reaching a Limit Drawing Ratio up to 2.6 at 170°C for rolled sheets. At last, a sheet cup 0.4 mm thick was deep drawn successfully at 170 °C.

scholarly journals Use of Fine-Grained Heat-Strengthened Steels to Increase the Operation Qualities of Bunker Capacities from Thin-Walled Galvanized Profiles

2021 ◽  
pp. 84-93
Author(s):  
Y. I. Hezentsvei ◽  
D. O. Bannikov
Keyword(s):  
Low Temperatures ◽  
High Strength Steels ◽  
High Strength ◽  
Numerical Calculations ◽  
Structural Scheme ◽  
Plan View ◽  
Fine Grained ◽  
Steel Sheets ◽  
Stiffening Ribs ◽  
Corrugated Sheets

Purpose. The work is aimed to study the use efficiency of fine-grained heat-strengthened steels (mainly 10G2FB) for steel bunker capacities. At the same time, the structural scheme of such a structure using corrugated steel sheets is considered as the main variant. Methodology. To achieve this purpose, a series of numerical calculations was carried out for a steel bunker capacity of a pyramidal-prismatic type with overall dimensions in plan view of 6×5.2 m and a total height of 4.5 m. The capacity was designed for complicated working conditions, in particular, increased loads, including long-term dynamic ones. The potential possibility of operating the container under conditions of high or low temperatures was also taken into account. At the same time, both the traditional structural scheme of a bunker capacity with horizontal stiffening ribs and the developed structural scheme based on corrugated steel sheets were analyzed. The calculations were carried out by the finite element method based on the SCAD for Windows project complex. Findings. Based on the results of the analysis and comparison of the data obtained in numerical calculations, it was found that the use of fine-grained heat-strengthened high-strength steels (for example, steel 10G2FB) for bunker capacities, both the traditional structural scheme with stiffening ribs and the developed structural scheme based on corrugated sheets, allows reducing material consumption by about 30% in both cases. At the same time, due to the good performance of fine-grained heat-strengthened steel 10G2FB, both at high and at low temperatures, it can be effectively used for steel bunker capacities that work in difficult conditions. Originality. The possibility and efficiency of the use of fine-grained, heat-strengthened high-strength steels for the construction of a steel bunker capacity is estimated. At the same time, such an estimation was given not only for structures of the traditional structural scheme with horizontal stiffening ribs, but also for bunkers with a developed structural scheme based on corrugated sheets. Practical value. From a practical point of view, quantitative parameters of the stress-strain state were obtained during investigations of various design variants for a steel bunker capacity. The data are presented in a compact form that is easy to evaluate and compare. They allow us to state about the improvement of the operation characteristics of capacities and the potential reduction of the risks of their failures and accidents during operation.

Effect of the Blank-Holding Load on the Drawing Force in the Deep-Drawing Process of Cylindrical and Square Cups

2015 ◽  
Vol 760 ◽  
pp. 379-384 ◽  
Author(s):  
Lucian Lazarescu ◽  
Ioan Nicodim ◽  
Dan Sorin Comsa ◽  
Dorel Banabic
Keyword(s):  
Aluminum Alloy ◽  
Deep Drawing ◽  
The Other ◽  
Drawing Process ◽  
Drawing Force ◽  
Forming Process ◽  
Deep Drawing Process ◽  
Steel Sheets ◽  
Other Hand ◽  
Blank Holding Force

In this study, the influence of the blank-holding force (BHF) on the drawing force (DF) in the deep-drawing process of cylindrical and square cups has been investigated experimentally. For this purpose, different constant and variable BHFs have been applied to AA6016-T4 aluminum alloy and DC04 steel sheets during the forming process. It has been observed that an increased constant BHF leads to an increase of DF. On the other hand, the variable BHF approach, in which the BHF decreases in six steps throughout the punch stroke, reduces the DF.

Dynamic strain aging of twinning-induced plasticity (TWIP) steel in tensile testing and deep drawing

2015 ◽  
Vol 633 ◽  
pp. 136-143 ◽  
Author(s):  
J.G. Kim ◽  
S. Hong ◽  
N. Anjabin ◽  
B.H. Park ◽  
S.K. Kim ◽  
...  
Keyword(s):  
Dynamic Strain Aging ◽  
Deep Drawing ◽  
Tensile Testing ◽  
Strain Aging ◽  
Twip Steel ◽  
Dynamic Strain

Novel processes for producing ultra-fine grained steel sheets

2007 ◽  
Vol 104 (2) ◽  
pp. 91-97
Author(s):  
T. Hiruta ◽  
Y. Matsubara ◽  
N. Nakata ◽  
M. Miyake ◽  
T. Kuroki ◽  
...  
Keyword(s):  
Fine Grained ◽  
Steel Sheets ◽  
Novel Processes
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