The Development and Manufacture of Aluminium Mokumé Gane (Wood-Grain Metal) Decorative Alloy

2004 ◽  
Vol 852 ◽  
Author(s):  
Ian T. Ferguson ◽  
Brian Derby ◽  
G.E. Thompson
Keyword(s):  
Solid State ◽  
Aluminium Alloy ◽  
Aluminium Alloys ◽  
Anodic Coating ◽  
Roll Bonding ◽  
Solid State Bonding ◽  
Wide Range ◽  
Wood Grain ◽  
Strong Contrast

ABSTRACTThe application of contemporary metallurgical knowledge and solid state bonding techniques provide for development of entirely new Mokumé Gane combinations. A multi-layered aluminium alloy is manufactured by the successive hot roll-bonding of two different aluminium alloys. The surface is then embossed with a selected pattern and machined back, exposing the various alloys. A range of suitable alloy combinations has been identified. When anodised, the surface presents the pattern as a strong contrast due to the differing anodising properties of the constituent alloy layers. The anodic coating can then be dyed with a wide range of colours to develop the decorative potential of the technique.

The Application of Modern Metallurgical Principles And Knowledge to the Manufacture of Mokumé Gane (Wood-Grain Metal) Decorative Alloy

2004 ◽  
Vol 852 ◽  
Author(s):  
Ian T. Ferguson ◽  
Brian Derby ◽  
G. E. Thompson
Keyword(s):  
Aluminium Alloys ◽  
Success Rates ◽  
Hot Press ◽  
Visual Effects ◽  
Roll Bonding ◽  
Solid State Bonding ◽  
New Type ◽  
Wood Grain ◽  
Further Development ◽  
Over Time

ABSTRACTMokumé Gane layered metal is a 300-year old decorative metal laminate technique peculiar to the isolated culture of the Japanese Shogunate. Like many complex craft practices handed down through individual experience, the manufacture and development of Mokumé Gane has changed minimally over time. The application of contemporary metallurgical knowledge and solid state bonding techniques such as Hot Press Diffusion Bonding and Hot Roll Bonding provide for further development of Mokumé Gane: bonding success rates are improved, and manufacturing times are reduced. In addition, the range of possible metal combinations is substantially increased; 42 different combinations to date have been successfully bonded, including a new type of Mokumé Gane employing aluminium alloys. This research has allowed a very large increase in the variety of colours, patterns, and visual effects, available to contemporary metalsmiths and jewellers.

scholarly journals Influence of Parameters during Induction Heating Cycle of 7075 Aluminium Alloys with RAP Process

2008 ◽  
Vol 141-143 ◽  
pp. 719-724 ◽  
Author(s):  
G. Vaneetveld ◽  
Ahmed Rassili ◽  
H.V. Atkinson
Keyword(s):  
Solid State ◽  
Aluminium Alloy ◽  
Heating Rate ◽  
Induction Heating ◽  
Aluminium Alloys ◽  
Heating Cycle ◽  
Fast Heating ◽  
Globular Microstructure ◽  
Protective Gas ◽  
Semi Solid

Thixoforging involves shaping alloys with a globular microstructure in the semi-solid state. To reach this kind of material, the Recrystallisation and Partial Melting (RAP) process can be used to obtain a globular microstructure from extruded material with liquid penetrating the recrystallised boundaries. Induction heating is used to apply the RAP process to slugs. One of the benefits of using this method of heating is the fast heating rate (20°C/s). This paper will help to improve heating parameters by showing their influence on 7075 aluminium alloy recrystallisation. These parameters are the heating rate; heating frequencies-power; presence or not of protective gas; position of the slug in the inductor; energy stored inside the slug; oxide layer on the slug side; chamfer of the slug upper corner.

Effect of Ultrasounds during the Solidification Process of the A357 Aluminium Alloy

2012 ◽  
Vol 192-193 ◽  
pp. 428-432
Author(s):  
Antonio Forn ◽  
Manel da Silva ◽  
Maite Teresa Baile ◽  
Josep A. Picas ◽  
Antolí Fauria
Keyword(s):  
Solid State ◽  
Aluminium Alloy ◽  
Ultrasonic Treatment ◽  
Aluminium Alloys ◽  
Solidification Process ◽  
Ultrasonic Waves ◽  
Solid Particles ◽  
Α Phase ◽  
Semi Solid ◽  
Ultrasound Effect

It is known that ultrasonic waves promote nucleation and globulization of solid particles in aluminium alloys. However, the studies performed up to date have been conducted, in the laboratory, using small volumes of aluminium. This article aims to establish the application of ultrasound effect in the A357 aluminium-silicon alloy in amounts of about 2 kg of material. The experiments have been conducted with different parameters of ultrasonic treatment, evaluating the microstructure of the slurry quenched from the semi-solid state. The globulization effect of aluminium α phase by ultrasounds is very effective in the area close to the ultrasonic horn tip and the transmission system, but its effect highly reduces in the regions far away from the source of ultrasonic waves.

Insights into Potent Therapeutical Antileukemic Agent L-glutaminase Enzyme Under Solid-state Fermentation: A Review

2020 ◽  
Vol 21 (3) ◽  
pp. 211-220 ◽  
Author(s):  
Chandrasai Potla Durthi ◽  
Madhuri Pola ◽  
Satish Babu Rajulapati ◽  
Anand Kishore Kola
Keyword(s):  
Solid State ◽  
Solid State Fermentation ◽  
Food Industry ◽  
Energy Requirement ◽  
Production Studies ◽  
Wide Range ◽  
Hybridoma Technology ◽  
Bacteria And Fungi ◽  
The Stability ◽  
Glutaminase Activity

Aim & objective: To review the applications and production studies of reported antileukemic drug L-glutaminase under Solid-state Fermentation (SSF). Overview: An amidohydrolase that gained economic importance because of its wide range of applications in the pharmaceutical industry, as well as the food industry, is L-glutaminase. The medical applications utilized it as an anti-tumor agent as well as an antiretroviral agent. L-glutaminase is employed in the food industry as an acrylamide degradation agent, as a flavor enhancer and for the synthesis of theanine. Another application includes its use in hybridoma technology as a biosensing agent. Because of its diverse applications, scientists are now focusing on enhancing the production and optimization of L-glutaminase from various sources by both Solid-state Fermentation (SSF) and submerged fermentation studies. Of both types of fermentation processes, SSF has gained importance because of its minimal cost and energy requirement. L-glutaminase can be produced by SSF from both bacteria and fungi. Single-factor studies, as well as multi-level optimization studies, were employed to enhance L-glutaminase production. It was concluded that L-glutaminase activity achieved by SSF was 1690 U/g using wheat bran and Bengal gram husk by applying feed-forward artificial neural network and genetic algorithm. The highest L-glutaminase activity achieved under SSF was 3300 U/gds from Bacillus sp., by mixture design. Purification and kinetics studies were also reported to find the molecular weight as well as the stability of L-glutaminase. Conclusion: The current review is focused on the production of L-glutaminase by SSF from both bacteria and fungi. It was concluded from reported literature that optimization studies enhanced L-glutaminase production. Researchers have also confirmed antileukemic and anti-tumor properties of the purified L-glutaminase on various cell lines.

Solid-state welding and microstructural features of an aluminium alloy subjected to a novel two-billet differential velocity sideways extrusion process

2021 ◽  
Vol 296 ◽  
pp. 117189
Author(s):  
Xiaochen Lu ◽  
Junquan Yu ◽  
Victoria A. Yardley ◽  
Hui Liu ◽  
Zhusheng Shi ◽  
...  
Keyword(s):  
Solid State ◽  
Aluminium Alloy ◽  
Extrusion Process

Fe/Ni diffusion behavior in the shear-extrusion solid state bonding process

2021 ◽  
Vol 67 ◽  
pp. 35-45
Author(s):  
Shuangjie Zhang ◽  
Wei Wang ◽  
Shibo Ma ◽  
Qiang Li
Keyword(s):  
Solid State ◽  
Bonding Process ◽  
Diffusion Behavior ◽  
Solid State Bonding

AGN1 vs AGN2 dichotomy as seen from the point of view of ionized outflows

2019 ◽  
Vol 15 (S356) ◽  
pp. 96-96
Author(s):  
Eleonora Sani
Keyword(s):  
Accretion Rate ◽  
Point Of View ◽  
Emission Lines ◽  
Black Hole Mass ◽  
X Ray ◽  
Bolometric Luminosity ◽  
Wide Range ◽  
Strong Contrast

AbstractI present a detailed study of ionized outflows in a large sample of 650 hard X-ray detected AGN. Taking advantage of the legacy value of the BAT AGN Spectroscopic Survey (BASS, DR1), we are able to reveal the faintest wings of the [OIII] emission lines associated with outflows. The sample allows us to derive the incidence of outflows covering a wide range of AGN bolometric luminosity and test how the outflow parameters are related with various AGN power tracers, such as black hole mass, Eddington ratio, luminosity. I’ll show how ionized outflows are more frequently found in type 1.9 and type 1 AGN (50% and 40%) with respect to the low fraction in type 2 AGN (20%). Within such a framework, I’ll demonstrate how type 2 AGN outflows are almost evenly balanced between blue- and red-shifted winds. This, in strong contrast with type 1 and type 1.9 AGN outflows which are almost exclusively blue-shifted. Finally, I’ll prove how the outflow occurrence is driven by the accretion rate, whereas the dependence of outflow properties with respect to the other AGN power tracers happens to be quite mild.

scholarly journals Homogenisation Efficiency Assessed with Microstructure Analysis and Hardness Measurements in the EN AW 2011 Aluminium Alloy

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1211
Author(s):  
Maja Vončina ◽  
Aleš Nagode ◽  
Jožef Medved ◽  
Irena Paulin ◽  
Borut Žužek ◽  
...  
Keyword(s):  
Experimental Data ◽  
Image Analysis ◽  
Phase Equilibrium ◽  
Aluminium Alloy ◽  
Phase Formation ◽  
Aluminium Alloys ◽  
Eutectic Phase ◽  
The Matrix ◽  
Equilibrium Solidification ◽  
Homogenisation Process

When extruding the casted rods from EN AW 2011 aluminium alloys, not only their homogenized structure, but also their extrudable properties were significantly influenced by the hardness of the alloy. In this study, the object of investigations was the EN AW 2011 aluminium alloy, and the effect of homogenisation time on hardness was investigated. First, homogenisation was carried out at 520 °C for different times, imitating industrial conditions. After homogenisation, the samples were analysed by hardness measurements and further characterised by microscopy and image analysis to verify the influence of homogenisation on the resulting microstructural constituents. In addition, non-equilibrium solidification was simulated using the program Thermo-Calc and phase formation during solidification was investigated. The homogenisation process enabled more rounded shape of the Al2Cu eutectic phase, equilibrium formation of the phases, and the precipitation in the matrix, leading to a significant increase in the hardness of the EN AW 2011 aluminium alloy. The experimental data revealed a suitable homogenisation time of 4–6 h at a temperature of 520 °C, enabling optimal extrusion properties.

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