Fatigue Properties of SPF/DB Joints in 7475 Aluminum Alloy and Ti-6A1-4V Alloy

1990 ◽  
Vol 196 ◽  
Author(s):  
Yoshiharu Mutoh ◽  
Masaru Kobayashi ◽  
Makoto Tatemura ◽  
Hideo Yoshida
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Strength ◽  
Oxide Film ◽  
Surface Finish ◽  
Fatigue Properties ◽  
Rolled Sheet ◽  
High Quality ◽  
Sheet Surface ◽  
Strength Tests ◽  
Cold Rolled

ABSTRACTBonding strength and fatigue strength tests of SPF/DB joints in 7475 aluminum alloy and Ti-6Al-4V alloy were carried out. Their strengths of the joints using cryogenic rolled sheet were higher than those using conventional cold rolled sheet. Surface finish for removing oxide film was essential to obtain high-quality bond in aluminum alloy.

Optimization of Rolling Modes on the Mill 1700 of JSC "ArselorMittal Temirtau" with Aim to Increase Quality of Sheet Rolled Products

2015 ◽  
Vol 1095 ◽  
pp. 786-794
Author(s):  
A.B. Naizabekov ◽  
V.A. Talmazan ◽  
S.N. Lezhnev ◽  
E.A Panin ◽  
А.S. Erzhanov ◽  
...  
Keyword(s):  
Surface Defects ◽  
Mechanical Damage ◽  
Rolling Process ◽  
Rolled Sheet ◽  
Strip Rolling ◽  
Technological Factors ◽  
Second Stage ◽  
Sheet Surface ◽  
Cold Rolled

Used the influence of technological factors of the rolling process on the intensity of the rolling out of the defect to determine the value of deformation and the coefficient of use of the plasticity resource. Introduced the notion of residual coefficient of plasticity resource in the second stage of transformation of the defect. Found that the causes of deterioration of the quality of cold-rolled sheet can be numerous defects of mechanical origin, caused by mechanical damage of the sheet surface. Conducted an analysis of profiles rolling modes, rolled on the mill 1700. With the use of existing methods calculated DUPR on workshop modes of rolling of specified profiles with and without considering the surface defects. Carried an optimization of the modes of strip rolling with surface defects.

Production of high-quality cold-rolled sheet on a five-stand 1700 mill

Metallurgist ◽  
1986 ◽  
Vol 30 (3) ◽  
pp. 93-96
Author(s):  
O. N. Soskovets ◽  
V. L. Mazur ◽  
N. K. Ishmukhamedov ◽  
A. A. Pervukhin ◽  
V. I. Kulikov ◽  
...  
Keyword(s):  
Rolled Sheet ◽  
High Quality ◽  
Cold Rolled

Fabrication of 5052 Aluminum Alloy Thin Slab by Electromagnetic Casting and Mechanical Properties of Its Cold-Rolled Sheet

2000 ◽  
Vol 329-330 ◽  
pp. 473-478 ◽  
Author(s):  
Shigeharu Kamado ◽  
T. Kosaka ◽  
Y. Kabayama ◽  
Yo Kojima ◽  
Toshiki Muramatsu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Rolled Sheet ◽  
Thin Slab ◽  
Electromagnetic Casting ◽  
Cold Rolled

Directionality of Fatigue Properties in Some Textured Sheet Metals

1970 ◽  
Vol 92 (1) ◽  
pp. 115-120 ◽  
Author(s):  
I. Le May ◽  
K. D. Nair
Keyword(s):  
Cold Rolling ◽  
Sheet Metal ◽  
Fatigue Properties ◽  
Rolled Sheet ◽  
Sheet Metals ◽  
Rolled Material ◽  
Pole Figures ◽  
Cold Rolling And Annealing ◽  
Cold Rolled

The fatigue properties of some face-centred cubic sheet metals with cold rolling and annealing textures are reported. The observed differences between fatigue properties measured in the transverse and longitudinal directions in cold-rolled material are discussed and are related to the pole figures for the material. The study emphasizes that considerable directionality of fatigue properties can occur in rolled sheet metal.

Measurement of the Oxide Film on Cold Rolled Steel by XPS and TEM

2013 ◽  
Vol 774-776 ◽  
pp. 1141-1144
Author(s):  
Sang Yong Lee
Keyword(s):  
Oxide Film ◽  
Photoelectron Spectroscopy ◽  
Sheet Material ◽  
Depth Profiling ◽  
Oxide Thickness ◽  
Dark Field ◽  
Rolled Sheet ◽  
Tem Analysis ◽  
Thin Oxide Film ◽  
Cold Rolled

X-ray photoelectron spectroscopy (XPS) and high resolution transmission electron microscopy (TEM) with high annular dark-field (HAADF) microscopy have been used to characterize the nanoscale oxide film formed naturally on the surface of cold-rolled sheet of mild steel. Main aim of this research was to confirm that XPS could be used in determining the thickness of thin oxide film as a substitute for the laborious TEM analysis. The preparation and analysis technique for the XPS depth profiling has been investigated to characterize the oxide film. The selection of appropriate sputter rate and sputter area according to sheet material components and the exact estimation of sputter depth from sputter rate during depth profiling were essential for the determination of the nanoscale oxide thickness.

scholarly journals INFLUENCE OF CASTING PARAMETERS ON FATIGUE PROPERTIES OF THE ŻS6U-WI ALLOY

2021 ◽  
pp. 53-64
Author(s):  
Anna Tomczak
Keyword(s):  
Fatigue Strength ◽  
Significant Influence ◽  
Great Influence ◽  
Casting Process ◽  
Cyclic Fatigue ◽  
Fatigue Properties ◽  
Nickel Superalloys ◽  
Aircraft Engines ◽  
Compressor Blades ◽  
Strength Tests

The hot parts of aircraft engines are made of nickel-based superalloys and work in extremely difficult conditions. The compressor blades mentioned in the article are usually produced by a casting process whose parameters have a great influence on the fatigue properties of the end product. The parameters of the casting process have significant influence on the microstructure, i.e. phase components morphologies. The article presents the results of the analysis of microstructures of nickel superalloys and the influence of casting parameters on the fatigue strength of finished products. The casting parameters were selected experimentally. The work included analysis of the microstructure of semifinished products and high-cyclic fatigue strength tests of the final product.

Improvement in Fatigue Strength of Friction Stir Welded Aluminum Alloy Plates by Laser Peening

2014 ◽  
Vol 891-892 ◽  
pp. 969-973 ◽  
Author(s):  
Yuji Sano ◽  
Kiyotaka Masaki ◽  
Keiichi Hirota
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Strength ◽  
Fatigue Testing ◽  
Large Deviation ◽  
Fatigue Cracks ◽  
Weld Zone ◽  
Base Material ◽  
Fatigue Properties ◽  
Laser Peening ◽  
Friction Stir

Plane bending fatigue testing was performed to study the fatigue properties of friction stir welded (FSW) 3 mm thick AA6061-T6 aluminum alloy plates. Fatigue cracks propagated with bends and curves on the specimens, showing large deviation from a linear line. This might be reflecting the material flow and microstructure in the weld zone. The fatigue strength of the unwelded base material (BM) was 110 MPa at 107 cycles and FSW deteriorated it to 90 MPa. However, laser peening (LP) restored the degraded fatigue strength up to 120 MPa which is higher than that of the BM.

Determination of the Fatigue Properties of Aluminum Alloy Using Mini Specimen

2012 ◽  
Vol 726 ◽  
pp. 63-68 ◽  
Author(s):  
Tomasz Tomaszewski ◽  
Janusz Sempruch
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Strength ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Material Strength ◽  
Cyclic Tension ◽  
Static Tensile ◽  
6063 Aluminum Alloy ◽  
Fatigue Characteristics

There are situations where taking normative specimens is impossible due to the dimensions of the objects investigated (e.g. extruded sections) and one of the solutions is to use mini specimens. As for non-standard specimen testing, it is essential to define the effect of size on fatigue strength. The research methodology facilitates the determination of fatigue characteristics (S-N) for EN AW-6063 aluminum alloy. The material is used to manufacture the extruded section in the process of extrusion of the material through the extruding die. The methodology assumes the geometry of the mini specimen and the normative specimen. As for the material strength identification, a static tensile test for the specimens made directly from finished elements and preliminarily strained in cycles was carried out. As a result of the cyclic material reinforcement, an increase in yield strength Re was observed, which, in turn, rejects Re as the upper criterion of the high-cycle fatigue range. The essential fatigue tests were performed based on unilateral cyclic tension (R = 0.1). The effect of size on fatigue strength was defined. Theoretically aluminum alloy non-sensitive to changes in the size of the cross-section showed a different strength in mini and normative specimens.

Fatigue Properties of Cold-Rolled Sheet Steels

1979 ◽  
Author(s):  
A. R. Krause ◽  
R. W. Landgraf ◽  
B. T. Crandall
Keyword(s):  
Fatigue Properties ◽  
Rolled Sheet ◽  
Sheet Steels ◽  
Cold Rolled

The Formability and Elongation of Aluminum Alloys AA5083 and AA3003 for Micro-Truss Sandwiches Manufacturing

2020 ◽  
Vol 38 (9A) ◽  
pp. 1396-1405
Author(s):  
Arwa F. Tawfeeq ◽  
Matthew R. Barnett
Keyword(s):  
Aluminum Alloy ◽  
Strain Rate ◽  
Cost Effective ◽  
Tensile Tests ◽  
Truss Structures ◽  
High Quality ◽  
Trade Off ◽  
Clad Layer ◽  
Higher Temperature ◽  
Different Shapes

The development in the manufacturing of micro-truss structures has demonstrated the effectiveness of brazing for assembling these sandwiches, which opens new opportunities for cost-effective and high-quality truss manufacturing. An evolving idea in micro-truss manufacturing is the possibility of forming these structures in different shapes with the aid of elevated temperature. This work investigates the formability and elongation of aluminum alloy sheets typically used for micro-truss manufacturing, namely AA5083 and AA3003. Tensile tests were performed at a temperature in the range of 25-500 ○C and strain rate in the range of 2x10-4 -10-2 s-1. The results showed that the clad layer in AA3003 exhibited an insignificant effect on the formability and elongation of AA3003. The formability of the two alloys was improved significantly with values of m as high as 0.4 and 0.13 for AA5083 and AA3003 at 500 °C. While the elongation of both AA5083 and AA3003 was improved at a higher temperature, the elongation of AA5083 was inversely related to strain rate. It was concluded that the higher the temperature is the better the formability and elongation of the two alloys but at the expense of work hardening. This suggests a trade-off situation between formability and strength. 

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