Effect of Temperature on the Tensile Strength and Thermoelectric e.m.f. Values of Aluminium Alloy

This article concerns the tribological properties of three selected polymer materials: polyamide PA6, polyethylene PE-HD and polyetheretherketone composite PEEK/BG during sliding against aluminium alloy EN AW-2017A in the presence of hydraulic oil HLP 68. The tests were carried out under contact pressure p of 3.5–11 MPa at ambient temperature T ranging from −20 °C to +20 °C. The dependence of kinetic friction coefficient μk on the two parameters was determined through tribological tests carried out using a pin-on-disc tribometer. A five-level central composite rotatable design (CCRD) was adopted for the experiment. All the test results were statistically analysed. The microhardness of the surface of the polymeric material was measured before and after the friction process. The surface was also examined under SEM. Temperature and contact pressure have been found to have a significant effect on the tribological properties of the tested sliding pairs. Relative to the applied friction conditions, the surfaces after friction showed rather heavy signs of wear.

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The effect of temperature and strain rate on the tensile strength of a fast-gas-cooled uranium-2 wt% molybdenum alloy

Journal of Nuclear Materials ◽

10.1016/0022-3115(85)90413-1 ◽

1985 ◽

Vol 132 (2) ◽

pp. 181-191 ◽

Cited By ~ 1

Author(s):

G.A.C. Boyd ◽

J. Harding ◽

P.A. Bleasdale ◽

K. Dunn ◽

G.I. Turner

Keyword(s):

Tensile Strength ◽

Strain Rate ◽

Molybdenum Alloy ◽

Effect Of Temperature

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Ultrafine Grain Structure Development in Aluminium Alloy by Strain Hardening using CCGP

ACS Journal for Science and Engineering ◽

10.34293/acsjse.v1i2.11 ◽

2021 ◽

Vol 1 (2) ◽

pp. 25-31

Author(s):

HS Siddesha ◽

Suhaaskapardhi BS ◽

Goutham C

Keyword(s):

Tensile Strength ◽

Aluminium Alloy ◽

Research Work ◽

Industrial Applications ◽

Grain Structure ◽

Ultrafine Grain ◽

Fine Grained ◽

Processed Material ◽

Super Plastic ◽

Ultrafine Grain Structure

Severe Plastic Deformation (SPD) processes are for developing ultrafine grained (UFG) structured materials for different Industrial applications. Cyclic Constrained Groove Pressing (CCGP) is a technique, produce fine grained structures in metallic sheets or plates in mass production. The objective of research work is to investigate the influence of CCGP processing on the super plastic behaviour of an Aluminium alloy. Samples in “ascast” materials processed by CCGP with as cast, 1, 2, 3 and 4 passes. Processed Material study for microhardness and Tensile strength mechanical properties test were done for different test specimens. Grain refinement, microhardness and Tensile strength increased with the number of CCGP passes.

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Evaluation of Tensile Strength Behaviour of Friction Stir Welding Joints of Aluminium Alloy with Interlayer

Lecture Notes in Mechanical Engineering - Advances in Production and Industrial Engineering ◽

10.1007/978-981-15-5519-0_26 ◽

2020 ◽

pp. 347-357

Author(s):

Avtar Singh ◽

Vinod Kumar ◽

Neel Kanth Grover

Keyword(s):

Tensile Strength ◽

Friction Stir Welding ◽

Aluminium Alloy ◽

Friction Stir ◽

Welding Joints

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Design-of-experiments application in the friction stir welding of aluminium alloy AA 8011-h14 for structural application

Multidiscipline Modeling in Materials and Structures ◽

10.1108/mmms-07-2019-0130 ◽

2019 ◽

Vol 16 (3) ◽

pp. 606-622

Author(s):

Navneet Khanna ◽

Mahesh Bharati ◽

Prachi Sharma ◽

Vishvesh J. Badheka

Keyword(s):

Tensile Strength ◽

Aluminium Alloy ◽

Tensile Testing ◽

Visual Inspection ◽

Welding Parameters ◽

Nugget Zone ◽

Content Type ◽

Taguchi Analysis ◽

Friction Stir ◽

Maximum Tensile Strength

Purpose The demand for aluminium alloys has been increasing in almost all the fields. In this study, the friction stir welding (FSW) of similar aluminium alloy AA 8011-h14 has been presented using three levels of tool rotational speed (n), tool tilt angle (ϴ) and tool feed (f). The purpose of this paper is to study the effect of welding parameters on various properties and time-temperature plots. Design/methodology/approach FSW was carried out using the L-9 orthogonal array of welding parameters generated using the Taguchi approach. Visual inspection and radiography testing were conducted to detect the surface and volume defects, respectively. Taguchi analysis was carried out to get optimised welding parameters for tensile testing. The microstructural analysis was carried out for the specimen possessing maximum tensile strength and the obtained grain structures were compared with the microstructure results of the base material. The peak process temperatures were noted and time-temperature plots were analysed for the varying parameters. The maximum value of hardness was recorded and analysed. Findings Visual inspection and radiography testing confirmed defect-free joints. The maximum tensile strength achieved was 84.44 MPa with 64.95 per cent efficiency. The optimised parameters obtained using Taguchi analysis for tensile testing were 1,500 rpm, 1° and 50 mm/min. Microstructure analysis for the specimen possessing maximum tensile strength revealed fine and equiaxed grains in the nugget zone. Time-temperature plots suggested the maximum temperature of 389 °C on the advancing side. A maximum hardness value of 36.4 HV was obtained in the nugget zone. Originality/value As per the knowledge of the authors, this study is the first attempt for the detailed experimental analysis on the FSW of this particular aluminium alloy AA 8011-h14.

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