Promising Resource Saving Technology for Processing Melts During Production of Cast Aluminum Alloys

Деев, В. Б.; Selyanin, I. F.; Kutsenko, A. I.; Белов, Н. А.; Ponomareva, K. V.

doi:10.1007/s11015-015-0050-4

Cited by 17 publications

(8 citation statements)

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“…The development of light alloys applied in as-cast condition, such as aluminum and magnesium alloys, has proven to be an effective way to reduce their cost and energy consumption. 22,38,39) In the present study, ten types of ¢-Ti alloys for as-cast applications were proposed, on the basis of the d-electrons concept, by using the Bo t -Md t diagram. To develop ¢-Ti alloys with an • UTS value of 1000 MPa and ¾ f value of 10% in as-cast condition, the new compositions of ten types of ¢-Ti alloys were chosen using mainly ubiquitous elements in the newly expanded area, greatly differing from conventional alloys.…”

Section: Introductionmentioning

confidence: 99%

Possibility of As-Cast Applications on β-Type Titanium Alloys Proposed in the Newly Expanded Area of Bot-Mdt Diagram

Matsugi

et al. 2020

Mater. Trans.

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Ten types ¢-type titanium alloys for as-cast applications were proposed by using mainly ubiquitous elements in the area greatly differ from conventional alloys in compositions, in the diagram consisting of bond order (Bo) and d-orbital energy level (Md). The object was to develop ¢type titanium alloys with ultimate tensile strength value of 1000 MPa and fracture strain value of 10% in as-cast condition without the posttreatments after cold crucible levitation melting, and their microstructures were controlled by adjusting its process parameters. The same microstructure and mechanical properties were also indicated on both as-cast and solution treated alloys, which mean the unnecessary of solution treatment in proposed alloys. Ti5.2Cr5.5Mn2.2Fe5.5Zr, Ti11Cr6Mn4.5Zr0.5Al and Ti13Zr6Mn6Cr5V alloys with a ¢ mono phase achieved objective values of mechanical properties in as-cast condition, which lead to development of alternative materials to the conventional ¢type titanium alloys, since they reduce energy consumption and 25% production costs by omitting complex post processing procedures. Moreover, the phase boundary between the mono ¢ phase and dual ¢ plus intermetallic compound phases were predicted for the first time in ¢type titanium alloys, according to the ten proposed alloys in newly expanded compositional area of the Bo t -Md t diagram.

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Section: Introductionmentioning

confidence: 99%

Possibility of As-Cast Applications on β-Type Titanium Alloys Proposed in the Newly Expanded Area of Bot-Mdt Diagram

Matsugi

et al. 2020

Mater. Trans.

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“…The problem of contamination of the initial charging materials with harmful residual elements, primarily iron, draws the relentless focus of researchers and manufacturers [1][2][3][4]. Due to its very low solubility in solid aluminum (max.…”

Section: Introductionmentioning

confidence: 99%

Archives of Foundry Engineering

Deev,

Prusov,

Prikhodko

et al. 2020

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Understanding the influence of iron impurity on the formation of the structure and the properties of hypereutectic aluminum-silicon alloys are important for achieving the required quality of castings, especially those obtained from secondary materials. In the present work, the influence of different iron contents (0.3, 1.1, and 2.0 wt.%) on the crystallization process, microstructure and mechanical properties of the Al-15% Si alloy was studied. It is shown that the presence of iron impurity in the Al-15% Si alloy leads to increasing the eutectic crystallization time from 6.2 to 7.6 s at increasing the iron content from 0.3 wt.% to 1.1 wt.%, changing the structure of the alloy eutectic in the solid state. The primary silicon and β-Al 5 SiFe phase coexist in the structure of the Al-15% Si alloys at a temperature below 575 °C in the range of iron concentrations from 0 to 2 wt.% in equilibrium conditions. In the experimental alloys structure, the primary crystals of the β-phase were metallographically detected only in the alloys containing 1.1 and 2 wt.% of iron impurity. Increase of the iron content up to 2 wt.% significantly reduces the mechanical properties of the Al-15% Si alloy due to the formation of large platelet-like inclusions of β-Al 5 SiFe phase.

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“…The method of lost-foam casting (LFC) is a promising technology for obtaining thin-walled cast products of aluminum alloys [1][2][3][4][5]. One of the ways to reduce the manufacturing cost of castings made by LFC-process is the application of resource-saving technologies based on the use of increased amount of secondary charge materials [6][7][8]. However, use of secondary materials in the melting charge can lead to various casting defects and, as a result, to rejection of castings [9,10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Superheat Melt Treatment on Microstructure and Mechanical Properties of Aluminum Alloys Produced by Lost Foam Casting

Деев

Прусов

Ponomareva

2018

SSP

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The resource-saving technology for producing of thin-walled castings from A356.1, A413.1 and A360.0 aluminum alloys by the lost foam casting method, as well as the results of this technology implementation in production conditions are considered in the paper. The technology involves thermo-speed treatment of the melt with the predominance of secondary materials in charge (85...90 wt.%), including isothermal holding and subsequent rapid cooling of the melt for fixation the high-temperature state. It is shown that the use of thermo-speed treatment promotes the production of aluminum castings with fine-grained microstructure and the enhanced level of mechanical properties without the addition of costly modifying additives, and makes it possible to use an increased amount of secondary charge materials during smelting.

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Promising Resource Saving Technology for Processing Melts During Production of Cast Aluminum Alloys

Cited by 17 publications

References 0 publications

Possibility of As-Cast Applications on β-Type Titanium Alloys Proposed in the Newly Expanded Area of <i>Bo<sub>t</sub>-Md<sub>t</sub></i> Diagram

Possibility of As-Cast Applications on β-Type Titanium Alloys Proposed in the Newly Expanded Area of <i>Bo<sub>t</sub>-Md<sub>t</sub></i> Diagram

Archives of Foundry Engineering

Effect of Superheat Melt Treatment on Microstructure and Mechanical Properties of Aluminum Alloys Produced by Lost Foam Casting

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