Strength Enhancement Study on Composites of AA6066 Aluminium Alloy with Magnesium Oxide and Coal Ash

Aluminium alloy is the most favourable material based on the various properties and economic factors. Always there are so many researches going on based on the enhancement of the material properties with various combinations and the various materials mixing rate depending upon the availability. These researches were focused on the augmentations of the properties, and then the corresponding properties can be used in the various applications depending upon the results. In this study, the AA6066 aluminium alloy composites were created with the magnesium oxide and coal ash with a variety of grouping. The specimens were named as AAMgOCA 1 to AAMgOCA 6 with respect to the volume concentration composition. Then, the composites were tested to identify the impact on various strengths such as yield strength, ultimate tensile strength, shear strength, and flexural strength. These strengths were compared with the two conditions of the composites such as annealed and heat-treated conditions. AAMgOCA 3 has the greatest results in heat-treated condition when compared with the annealed condition.

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“Microstructure and mechanical characterisation of titanium alloy linear friction welds”

MATEC Web of Conferences ◽

10.1051/matecconf/202032104030 ◽

2020 ◽

Vol 321 ◽

pp. 04030

Author(s):

Bertrand Flipo ◽

Kathryn Beamish ◽

Bryan Humphreys ◽

Martin Wood

Keyword(s):

Titanium Alloy ◽

Performance Data ◽

Metallographic Examination ◽

Treated Condition ◽

Heat Treated ◽

Linear Friction ◽

Heat Treated Condition ◽

High Integrity ◽

The Impact ◽

Weld Heat

The increasing use of composite materials in new aircraft builds leads to a significant demand for titanium alloy structural parts. The increasing costs and popularity of this material, together with restrictions in supply and processing, are driving the aerospace industry to make increasingly efficient use of available material. Linear Friction Welding (LFW) is a rapid, high integrity, solid-state forging process that has the potential to decrease the buy-to-fly ratio, production time and time to market of aerostructure components. Its dependability has already been proven for the production of key components in some of the latest generation aero engines. The LFW process is yet to be used for aerostructures. This is primarily due to the LFW process not being widely known, but also due to a lack of performance data on aerostructures manufactured by LFW being available to the supply chain and design community. To address this issue, a large series of titanium alloy weldments was produced and assessed via metallographic examinations and mechanical testing in both as-welded and post-weld heat-treated condition. The matrix of experiments was able to capture the LFW process window of this titanium alloy, and to measure the impact of the parametric conditions. Metallographic examination revealed a high integrity weld free from contaminants and oxides at the weld interface; with a characteristic recrystallised Widmanstätten martensitic Beta weld centre zone microstructure, in as welded condition, and a finegrained equiaxed recrystallised to alpha-beta microstructure in post-weld heat-treated condition. As-welded joints were tested under tensile and alternating fatigue conditions to provide an extended set of joint performance data. Joints demonstrated tensile performance equivalent to that of the parent material in all cases, with near-parent fatigue properties and improved (reduced) fatigue scatter in the post-weld heat-treated condition.

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FEDERATED F401.5Ni

Alloy Digest ◽

10.31399/asm.ad.al0212 ◽

1974 ◽

Vol 23 (12) ◽

Keyword(s):

Fracture Toughness ◽

Elevated Temperatures ◽

High Strength ◽

Heat Treating ◽

Casting Alloy ◽

Aluminum Casting ◽

Aluminum Casting Alloy ◽

Treated Condition ◽

Heat Treated ◽

Heat Treated Condition

Abstract FEDERATED F401.5Ni is a heat-treatable aluminum casting alloy with high strength and good wear resistance in the fully heat-treated condition. It is recommended for castings requiring good strength at elevated temperatures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-212. Producer or source: Federated Metals Corporation, ASARCO Inc..

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UNS A96101

Alloy Digest ◽

10.31399/asm.ad.al0287 ◽

1988 ◽

Vol 37 (3) ◽

Keyword(s):

Electrical Conductivity ◽

Corrosion Resistance ◽

Shear Strength ◽

Physical Properties ◽

High Strength ◽

Heat Treating ◽

High Electrical Conductivity ◽

Treated Condition ◽

Heat Treated ◽

Heat Treated Condition

Abstract UNS NO. A96101 in the heat treated condition is used primarily for enclosed bus conductor where both high strength and high electrical conductivity are desirable. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-287. Producer or source: Various aluminum companies.

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UNS G61200

Alloy Digest ◽

10.31399/asm.ad.sa0458 ◽

1991 ◽

Vol 40 (4) ◽

Keyword(s):

Fracture Toughness ◽

High Temperature ◽

Heat Treating ◽

Case Hardening ◽

Steel Mills ◽

Temperature Performance ◽

Treated Condition ◽

Heat Treated ◽

High Fatigue ◽

Heat Treated Condition

Abstract UNS G62100 is a tough, shock resisting, case-hardening chromium-vanadium steel. It has high fatigue resistance in the heat treated condition. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-458. Producer or source: Alloy steel mills and foundries.

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AISI 9840

Alloy Digest ◽

10.31399/asm.ad.sa0055 ◽

1957 ◽

Vol 6 (3) ◽

Keyword(s):

Fracture Toughness ◽

Heat Treating ◽

Good Combination ◽

Nickel Chromium ◽

Steel Mills ◽

Treated Condition ◽

Heat Treated ◽

Molybdenum Steel ◽

Heat Treated Condition ◽

Lower Nickel

Abstract AISI 9840 is a nickel-chromium-molybdenum steel very similar to AISI 4340 with lower nickel and slightly higher manganese. In the heat treated condition it has good combination of strength, fatigue resistance, toughness and wear resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-55. Producer or source: Alloy steel mills and foundries.

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MAXEL 3 1/2

Alloy Digest ◽

10.31399/asm.ad.sa0262 ◽

1971 ◽

Vol 20 (3) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

Physical Properties ◽

Surface Treatment ◽

Brinell Hardness ◽

Heat Treating ◽

Treated Condition ◽

Heat Treated ◽

Heat Treated Condition ◽

Specialty Metals

Abstract MAXEL 3 1/2 is a free-machining alloy steel that provides an outstanding combination of heat-treated properties and superior machinability. It can be supplied in the heat-treated condition at 262-311 Brinell hardness. See also MAX-EL 3 1/2, Alloy Digest SA-45, July 1956. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as heat treating, machining, joining, and surface treatment. Filing Code: SA-262. Producer or source: Crucible Specialty Metals Division, Colt Industries.

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USS STRUX

Alloy Digest ◽

10.31399/asm.ad.sa0100 ◽

1960 ◽

Vol 9 (7) ◽

Keyword(s):

United States ◽

Tensile Strength ◽

High Strength ◽

Notch Toughness ◽

United States Steel Corporation ◽

Treated Condition ◽

High Strength Level ◽

Heat Treated ◽

Heat Treated Condition ◽

Very High

Abstract USS STRUX is an alloy steel designed for use in the heat treated condition at a minimum tensile strength of 280,000 psi. At this very high strength level the steel has adequate ductility and notch toughness for critical applications. This datasheet provides information on composition and tensile properties. Filing Code: SA-100. Producer or source: United States Steel Corporation.

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LUCEFIN GROUP C45U (1.1730)

Alloy Digest ◽

10.31399/asm.ad.ts0784 ◽

2020 ◽

Vol 69 (1) ◽

Keyword(s):

High Temperature ◽

Cold Work ◽

Hard Case ◽

Medium Carbon ◽

Hardened Zone ◽

Temperature Performance ◽

Treated Condition ◽

Heat Treated ◽

Heat Treated Condition ◽

Cold Work Tool Steel

Abstract Lucefin Group C45U is a medium-carbon, non-alloy cold-work tool steel. It is primarily used in the non-heat-treated condition. For special applications it is used in the quenched and tempered condition. Owing to its low hardenability, C45U develops a fully hardened zone that is relatively thin, even when quenched drastically. Thicker sections have a hard case over a tough core. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming and joining. Filing Code: TS-784. Producer or source: Lucefin S.p.A.

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Microstructural Study of Pt-based Superalloys in the Heat Treated Condition

Microscopy and Microanalysis ◽

10.1017/s1431927612010288 ◽

2012 ◽

Vol 18 (S2) ◽

pp. 1686-1687

Author(s):

M.B. Shongwe ◽

L.A. Cornish ◽

M.J. Witcomb

Keyword(s):

Microstructural Study ◽

Treated Condition ◽

Heat Treated ◽

Heat Treated Condition

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

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Research on the Friction Stir Welding of Sc-Modified AA2519 Extrusion

Metals ◽

10.3390/met9101024 ◽

2019 ◽

Vol 9 (10) ◽

pp. 1024 ◽

Cited By ~ 5

Author(s):

Robert Kosturek ◽

Lucjan Śnieżek ◽

Janusz Torzewski ◽

Marcin Wachowski

Keyword(s):

Mechanical Properties ◽

Friction Stir Welding ◽

Base Material ◽

Stir Zone ◽

Welding Parameters ◽

Friction Stir ◽

Treated Condition ◽

Heat Treated ◽

Heat Treated Condition ◽

Fsw Parameters

The aim of this research was to investigate the effect of friction stir welding (FSW) parameters on microstructure and mechanical properties of Sc-modified AA2519 extrusion joints. The workpiece was welded by FSW in non-heat-treated condition with seven different sets of welding parameters. For each obtained joint macrostructure and microstructure observations were performed. Mechanical properties of joints were investigated using tensile test together with localization of fracture location. Joint efficiencies were established by comparing measured joints tensile strength to the value for base material. The obtained results show that investigated FSW joints of Sc-modified AA2519 in the non-heat-treated condition have joint efficiency within the range 87–95%. In the joints obtained with the lowest ratio of the tool rotation speed to the tool traverse speed, the occurrence of imperfections (voids) localized in the stir zone was reported. Three selected samples were subjected to further investigations consisting microhardness distribution and scanning electron microscopy fractography analysis. As the result of dynamic recrystallization, the microhardness of the base material value of 86 HV0.1 increased to about 110–125 HV0.1 in the stir zone depending on the used welding parameters. Due to lack of the strengthening phase and low strain hardening of used alloy the lack of a significantly softened zone was reported by both microhardness analysis and investigation of the fractured samples.

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