Aerospace series. Zinc-Nickel (12 %-16 % Ni) plating of steels with specified tensile strength ≤ 1 450 MPa, copper alloys, nickel alloys and aluminium alloys for parts and fasteners

Aluminium and its alloys are lightweight, corrosion-resistant, affordable and high-strength material and find wide applications in shipbuilding, automotive, constructions, aerospace and other industrial sectors. In applications like aerospace, marine and automotive industries, there is a need to join components made of different aluminium alloys, viz. AA6061 and AA5083. In this study friction stir welding (FSW) is used to join dissimilar plates made of AA6061-T6 and AA5083-O. The effect of varying tool pin profile, tool rotation speed, tool feed rate and tilt angle of the tool has been investigated on the tensile strength and percentage elongation of the welded joints. Box-Behkan design, with four input parameters and three levels of each parameter has been employed to decide the set of experimental runs. The regression models have been developed to investigate the influence of welding variables on the tensile strength and elongation of the welded joint. It is revealed that with the increase in welding parameters like tool rpm, tool feed rate and tilt angle of the tool, both the mechanical properties increase, reach a maximum level, followed by a decrease with further increase in the value of parameters. Amongst different types of tool pin profiles used, the FSW tool having straight cylindrical (SC) pin profile is found to yield the maximum strength and elongation of the welded joint for different combinations of welding parameters. Multiple response optimization indicates that the maximum UTS (135.83 MPa) and TE (4.35%) are obtained for the welded joint fabricated using FSW tool having SC pin profile, tilted at 1.11° and operating at tool speed and feed rate of 1568 rpm and 39.53 mm/min., respectively.

The Investigation on Aluminium Alloys Automobile Wheel with Low-Titanium Content Produced by Electrolysis

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.317 ◽

2005 ◽

Vol 475-479 ◽

pp. 317-320 ◽

Cited By ~ 1

Author(s):

Jing Pei Xie ◽

Ji Wen Li ◽

Zhong Xia Liu ◽

Ai Qin Wang ◽

Yong Gang Weng ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Aluminium Alloys ◽

Solution Treatment ◽

A356 Alloy ◽

Aging Treatment ◽

Titanium Content ◽

The Matrix ◽

Automobile Wheel

The in-situ Ti alloying of aluminium alloys was fulfilled by electrolysis, and the material was made into A356 alloy and used in automobile wheels. The results show that the grains of the A356 alloy was refined and the second dendrites arm was shortened due to the in-situ Ti alloying. Trough 3-hour solution treatment and 2-hour aging treatment for the A356 alloy, the microstructures were homogeneous, and Si particles were spheroid and distribute in the matrix fully. The outstanding mechanical properties with tensile strength (σb≥300Mpa) and elongation values (δ≥10%) have been obtained because the heat treatment was optimized. Compared with the traditional materials, tensile strength and elongation were increased by 7.6~14.1% and 7.4~44.3% respectively. The qualities of the automobile wheels were improved remarkably.

Electrodeposition of Zinc-Nickel Alloys from Ethylene Glycol for Corrosion Protection

ECS Meeting Abstracts ◽

10.1149/ma2021-0118799mtgabs ◽

2021 ◽

Vol MA2021-01 (18) ◽

pp. 799-799

Author(s):

Roberto Bernasconi ◽

Fatma Godze Firtin ◽

Buse Kahyaoglu ◽

Luca Nobili ◽

Luca Magagnin

Keyword(s):

Ethylene Glycol ◽

Corrosion Protection ◽

Nickel Alloys ◽

Zinc Nickel

Effects of Zr, Y on the Microstructure and Properties of As-Cast Cu-0.5Y-xZr (wt.%) Alloys

Metals ◽

10.3390/met9101084 ◽

2019 ◽

Vol 9 (10) ◽

pp. 1084

Author(s):

Dong Liang ◽

Ning Wang ◽

Yuxiang Wang ◽

Zhenjie Liu ◽

Ying Fu

Keyword(s):

Electron Microscopy ◽

Mechanical Properties ◽

Tensile Strength ◽

Copper Alloys ◽

Testing Machine ◽

Elongation Rate ◽

Nominal Composition ◽

Microstructure And Properties ◽

Universal Material Testing Machine ◽

Material Testing Machine

In this paper, the microstructure and properties of as-cast Cu-Y-Zr alloys with different Zr content were studied in order to investigate whether the precipitates in copper alloys would interact with each other by adding Y and Zr simultaneously. As-cast Cu-0.5Y-xZr (wt.%, x = 0.05 and 0.1, nominal composition) alloys were prepared by vacuum melting in this study. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and transmission electron microscopy (TEM) were used to observe the microstructure of the alloys. The mechanical properties of the alloys were tested by universal material testing machine at room temperature. The effects of Zr content on the microstructure and mechanical properties of the alloys were explored. As shown by the research results, in the as-cast Cu-0.5Y-xZr (wt.%) alloys, the precipitated phase was the Cu5Y/Cu5Zr phase and ranged from 10 nm to 70 nm in size; when the Zr content increased from 0.05 wt.% to 0.1 wt.%, both the tensile strength and elongation rate of the alloys increased; when the Zr content was 0.1 wt.%, the tensile strength was 225 MPa and the elongation rate was 22.5%.