An Innovative Industrial Process for Forging 7050 Al Alloy

The effect of an unconventional thermal treatment method aimed to improve toughness behavior in Al alloys is reported. The method involves solution heat treating and an intermediate warm working step, before final ageing thermal treatment on a AA7050 high resistance aluminum alloy. Results show the possibility to increase fracture toughness behavior without tensile and conductivity (IACS) properties loss by adopting a warm deformation process instead of the standard cold deformation. Moreover, the adoption of an intermediate warm deformation instead of standard cold deformation, allows to reduce material microstructural grain-size heterogeneity.

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ALUMINUM 513.0

Alloy Digest ◽

10.31399/asm.ad.al0265 ◽

1986 ◽

Vol 35 (2) ◽

Keyword(s):

Corrosion Resistance ◽

Shear Strength ◽

Thermal Treatment ◽

Heat Treating ◽

Casting Alloy ◽

Permanent Mold ◽

Food Handling ◽

Mold Casting ◽

Plant Equipment ◽

Strength And Ductility

Abstract ALUMINUM 513.0 is an aluminum-magnesium-zinc permanent-mold casting alloy. It cannot be hardened nor strengthened by any thermal treatment and is characterized by moderate strength and ductility. It is recommended for such applications as chemical-plant equipment, food handling and marine hardware. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: Al-265. Producer or source: Various aluminum companies.

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ENDURO 19-9SMo

Alloy Digest ◽

10.31399/asm.ad.ss0207 ◽

1968 ◽

Vol 17 (4) ◽

Keyword(s):

Fracture Toughness ◽

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Thermal Treatment ◽

Physical Properties ◽

Surface Treatment ◽

Heat Treating ◽

Temperature Performance ◽

Type Stainless Steel

Abstract ENDURO 19-9-SMo is a 19-9 type stainless steel containing molybdenum to greatly increase its resistance to attack by most chemicals. It is nonmagnetic and does not respond to thermal treatment for hardening. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-207. Producer or source: Republic Steel Corporation.

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Influence of ageing treatment on microstructure, mechanical properties and adhesive wear behaviour of 6063 aluminium alloy

Industrial Lubrication and Tribology ◽

10.1108/ilt-01-2012-0007 ◽

2014 ◽

Vol 66 (4) ◽

pp. 520-524 ◽

Cited By ~ 1

Author(s):

Serkan Büyükdoğan ◽

Süleyman Gündüz ◽

Mustafa Türkmen

Keyword(s):

Mechanical Properties ◽

Wear Resistance ◽

High Speed ◽

Al Alloys ◽

Wear Behaviour ◽

Al Alloy ◽

Strain Ageing ◽

Content Type ◽

Static Strain ◽

Structural Applications

Purpose – The paper aims to provide new observations about static strain ageing in aluminium (Al) alloys which are widely used in structural applications. Design/methodology/approach – The present work aims to provide theoretical and practical information to industries or researchers who may be interested in the effect of static strain ageing on mechanical properties of Al alloys. The data are sorted into the following sections: introduction, materials and experimental procedure, results and discussion and conclusions. Findings – Tensile strength, proof strength (0.2 per cent) and percentage elongation measurement were used to investigate the effect of strain ageing on the mechanical properties. Wear tests were performed by sliding the pin specimens, which were prepared from as-received, solution heat-treated, deformed and undeformed specimens after ageing, on high-speed tool steel (64 HRC). It is concluded that the variations in ageing time improved the strength and wear resistance of the 6063 Al alloy; however, a plastically deformed solution-treated alloy has higher strength and wear resistance than undeformed specimens for different ageing times at 180°C. Practical implications – A very useful source of information for industries using or planning to produce Al alloys. Originality/value – This paper fulfils an identified resource need and offers practical help to the industries.

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Mechanisms of thermal treatment on two dominant copepod species in O3/BAC processing of drinking water

Ecotoxicology ◽

10.1007/s10646-021-02392-8 ◽

2021 ◽

Author(s):

Wei Jiang ◽

Sheng Dong ◽

Fangfang Xu ◽

Jing Chen ◽

Chen Gong ◽

...

Keyword(s):

Drinking Water ◽

Thermal Treatment ◽

Southern China ◽

Paraffin Section ◽

Treatment Method ◽

Severe Damage ◽

Internal Organs ◽

Biological Activated Carbon ◽

Processing Plants ◽

Hatching Rates

AbstractPhyllodiaptomus tunguidus and Heliodiaptomus falxus are dominant copepods species in drinking water processing plants in southern China. With a potential penetration risk, the breeding and leakage of copepods are drawing more and more attention in recent years. The current study provided a thermal treatment method to control copepods and their eggs. Results showed that: (1) the immediate death rates of P. tunguidus and H. falxus after heated to 34–40 °C for 5 min are positively correlated to the treatment temperatures (P < 0.01), and all individuals of the both species were eliminated after heated at 40 °C for 5 min; (2) overall hatching rates of P. tunguidus eggs were negatively correlated with treatment temperatures (P < 0.01) between 39–45 °C, with zero percent hatched after treatment at 45 °C for 5 min; (3) hatching rates of H. falxus were negatively correlated with treatment temperatures (P < 0.01) between 37–41 °C, with no nauplii hatched when treated at 41 °C for 5 min; (4) paraffin section histological examination indicated that thermal treatment caused severe damage to internal organs and egg structure. Finally, based on the experimental data, the application of the thermal treatment method was discussed in ozonation combined with biological activated carbon (O3/BAC) processing of drink water treatment.

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Influence of Calcination Temperature on Crystal Growth and Optical Characteristics of Eu3+ Doped ZnO/Zn2SiO4 Composites Fabricated via Simple Thermal Treatment Method

Crystals ◽

10.3390/cryst11020115 ◽

2021 ◽

Vol 11 (2) ◽

pp. 115

Author(s):

Suhail Huzaifa Jaafar ◽

Mohd Hafiz Mohd Zaid ◽

Khamirul Amin Matori ◽

Sidek Hj. Ab Aziz ◽

Halimah Mohamed Kamari ◽

...

Keyword(s):

Thermal Treatment ◽

Band Gap ◽

Calcination Temperature ◽

Emission Intensity ◽

Emission Spectra ◽

Treatment Method ◽

Absorption Bands ◽

Vis Spectroscopy ◽

Doped Zno ◽

Zno Crystal

This research paper proposes the usage of a simple thermal treatment method to synthesis the pure and Eu3+ doped ZnO/Zn2SiO4 based composites which undergo calcination process at different temperatures. The effect of calcination temperatures on the structural, morphological, and optical properties of ZnO/Zn2SiO4 based composites have been studied. The XRD analysis shows the existence of two major phases which are ZnO and Zn2SiO4 crystals and supported by the finding in the FT-IR. The FESEM micrograph further confirms the existence of both ZnO and Zn2SiO4 crystal phases, with progress in the calcination temperature around 700–800 °C which affects the existence of the necking-like shape particle. Absorption humps discovered through UV-Vis spectroscopy revealed that at the higher calcination temperature effects for higher absorption intensity while absorption bands can be seen at below 400 nm with dropping of absorption bands at 370–375 nm. Two types of band gap can be seen from the energy band gap analysis which occurs from ZnO crystal and Zn2SiO4 crystal progress. It is also discovered that for Eu3+ doped ZnO/Zn2SiO4 composites, the Zn2SiO4 crystal (5.11–4.71 eV) has a higher band gap compared to the ZnO crystal (3.271–4.07 eV). While, for the photoluminescence study, excited at 400 nm, the emission spectra of Eu3+ doped ZnO/Zn2SiO4 revealed higher emission intensity compared to pure ZnO/Zn2SiO4 with higher calcination temperature exhibit higher emission intensity at 615 nm with 700 °C being the optimum temperature. The emission spectra also show that the calcination temperature contributed to enhancing the emission intensity.

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Direct Cladding from Molten Metals of Aluminum and Magnesium Alloys Using a Tandem Horizontal Twin Roll Caster

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.772.250 ◽

2015 ◽

Vol 772 ◽

pp. 250-256 ◽

Cited By ~ 5

Author(s):

Hideto Harada ◽

Shin Ichi Nishida ◽

Mayumi Suzuki ◽

Hisaki Watari ◽

T. Haga

Keyword(s):

Surface Condition ◽

Hardness Test ◽

Al Alloys ◽

Mg Alloy ◽

Al Alloy ◽

Molten Metals ◽

Electron Probe Micro Analyzer ◽

Twin Roll Caster ◽

Aluminum And Magnesium Alloys ◽

Twin Roll

This paper describes direct cladding of magnesium (Mg) and aluminum (Al) alloys using a tandem horizontal twin roll caster that has three pairs of upper and lower rolls. Manufacturing conditions that are appropriate for fabricating Al/Mg and Al/Mg/Al cladded material were investigated. The surface condition of the cladded cast strip was examined. An electron probe micro analyzer was used to observe the interface between Al alloy and Mg alloy. The thickness of the mixed layer of Al and Mg alloy was 15μm, and how the materials were connected was clarified. Microscopic observation and backscattered electron analysis were used to investigate the cladding mechanisms of the Al and Mg alloy layers. Average hardness was determined using the Vickers hardness test at the Al layer and at the diffused layer between Mg and Al alloys. Cladding of Al/Mg alloy and A/Mg/Al alloy was possible using a tandem twin-roll caster. In addition, Al3Mg2 and Al12Mg17 phase precipitation at the interface of the Al and Mg alloys was confirmed during direct cladding from molten metals.

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The effects and roles of PVP on the phase composition, morphology and magnetic properties of cobalt ferrite nanoparticles prepared by thermal treatment method

Fibers and Polymers ◽

10.1007/s12221-012-0831-3 ◽

2012 ◽

Vol 13 (7) ◽

pp. 831-836 ◽

Cited By ~ 10

Author(s):

Mahmoud Goodarz Naseri ◽

Elias B. Saion ◽

Saeed Setayeshi

Keyword(s):

Magnetic Properties ◽

Phase Composition ◽

Thermal Treatment ◽

Cobalt Ferrite ◽

Treatment Method ◽

Ferrite Nanoparticles ◽

Cobalt Ferrite Nanoparticles

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Effects of the Duration of Potentiostatic Anodizing on the Corrosion Resistance and Surface Morphology of Films Formed on Mg-Al Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.486-487.125 ◽

2005 ◽

Vol 486-487 ◽

pp. 125-128 ◽

Cited By ~ 1

Author(s):

Seong Jong Kim ◽

Seok Ki Jang ◽

Jeong Il Kim

Keyword(s):

Corrosion Resistance ◽

Surface Morphology ◽

Anodic Oxide ◽

Al Alloys ◽

Anodic Film ◽

Al Alloy ◽

Active Dissolution ◽

Dissolution Reaction ◽

Alloy Az91 ◽

Morphology Of Films

The effects of the duration of potentiostatic anodizing on the corrosion resistance and surface morphology of anodic oxide films formed on Mg-Al alloy (AZ91) in 1 M NaOH were investigated. With the formation of an anodic film, the current density decreased gradually, started to stabilize at 300 s, and was relatively constant at 600 s. These results may be related to the increased time for catalysis of the active dissolution reaction, which not only enlarges the area covered by the anodic film, but also produces a more coherent, thicker film. The reference corrosion potentials of the anodic oxide film for AZ91 shifted in the noble direction with time. In general, the corrosion resistance characteristics were improved with anodizing time.

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