Manufacturing and Properties of Radiation Resistance Aluminum Alloys and Composites with Addition of Gadolinium

2019 ◽  
Vol 822 ◽  
pp. 195-201
Author(s):  
G.A. Kosnikov ◽  
Alexander V. Kalmykov ◽  
Eduard N. Bespalov
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys ◽  
Radiation Resistance ◽  
Induction Melting ◽  
Neutron Absorption ◽  
Alloying Element ◽  
Absorption Properties ◽  
Disperse Particles

In this work, the technology of Al-Gd alloys production has been developed, in which gadolinium is added as an alloying element during induction melting or in the composition of Gd2O3 disperse particles in the complex use of powder metallurgy and foundry technologies. The design of Vibration-jet agitator (VJA) and technology of its use for introduction of disperse particles into aluminum melts were developed. Aluminum alloys and dispersion-strengthened composites containing gadolinium have been obtained, their structure and neutron absorption properties has been studied.

JESSOP-SAVILLE ZIRCONIUM ALLOY

Alloy Digest ◽  
1965 ◽  
Vol 14 (3) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Zirconium Alloy ◽  
Heat Treating ◽  
Pressurized Water Reactors ◽  
Neutron Absorption ◽  
High Melting Point ◽  
Absorption Properties ◽  
Pressurized Water ◽  
Excellent Corrosion Resistance ◽  
Water Reactors

Abstract JESSOP-SAVILLE ZIRCONIUM Alloy has a high melting point and possesses excellent corrosion resistance coupled with low neutron absorption properties. It is equivalent to ZIRCALOY 2. It is recommended for pressurized water reactors. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Zr-2. Producer or source: Jessop-Saville Ltd, Brightside Works.

Weldability: Effect of Alloying Element Sc, Mn, and Zr on Alloys of the Al-Mg-Sc-Mn-Zr System

2019 ◽  
Author(s):  
V. I. Lukin
Keyword(s):  
Aluminum Alloys ◽  
Practical Importance ◽  
Strength Properties ◽  
Strength Characteristics ◽  
Mg Alloy ◽  
Alloying Element ◽  
Processing Properties ◽  
Alloys Of The Al ◽  
Effect Of Alloying

Scandium in aluminum alloys behaves as the most efficient modifier of the structure of the material and as an agent suppressing recrystallization. This unique behavior of scandium in alloys of the Al-Mg system greatly increases the strength characteristics, whilst retaining on a higher level the ductility and processing properties of deformed semi-finished products. This article describes the effect of complex alloying the Al-6.3% Mg alloy with scandium, manganese and zirconium on the weldability and strength properties of the material is of considerable scientific and practical importance.Investigations.

Powder Metallurgy Aluminum Alloys: Structure and Porosity

2019 ◽  
Author(s):  
Will Judge ◽  
Georges Kipouros
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys ◽  
Material Properties ◽  
Cost Effective ◽  
High Reactivity ◽  
Commercial Production ◽  
Processing Conditions ◽  
Near Net Shape ◽  
And Performance ◽  
Production Conditions

The production of aluminum alloys through powder metallurgy (PM) processes allows for the manufacture of net- or near-net-shape components in a cost-effective and sustainable manner. The high reactivity of aluminum metal, however, complicates PM processing, and special attention must be given to certain steps during production, particularly sintering. PM processing conditions strongly affect the structure and porosity of aluminum PM alloys, which ultimately determine their material properties and performance. In this article, the fundamental aspects of the commercial production of aluminum PM alloys are presented, along with the effects of production conditions on the structure and porosity of aluminum PM alloys. The properties and performance of aluminum PM alloys are then analyzed and interpreted with respect to their structure and porosity.

Compression stress strengthening modelling of a ultrafine-grained equiatomic SPS CoCrFeNiNb high-entropy alloy

2020 ◽  
pp. 095440622094324
Author(s):  
Marcello Cabibbo ◽  
Filip Průša ◽  
Alexandra Šenková ◽  
Andrea Školáková ◽  
Vojtěch Kučera ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Mechanical Alloying ◽  
Oxide Phase ◽  
High Entropy Alloy ◽  
Induction Melting ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Plasma Sintering ◽  
Transmission Electron ◽  
Spark Plasma

High-entropy alloys are known to show exceptionally high mechanical properties, both compression and tensile strength, and unique physical properties, such as their phase stability. These quite unusual properties are primarily due to the microstructure generated by mechanical alloying processes, such as conventional induction arc melting, powder metallurgy, or mechanical alloying. In the present study, an equiatomic CoCrFeNiNb high-entropy alloy was prepared by a sequence of conventional induction melting, powder metallurgy, and compaction via spark plasma sintering. The high-entropy alloys showed uniform sub-micrometer grain microstructure consisted by a mixture of an fcc solid solution strengthened by a hcp Laves phase and a third intergranular oxide phase. The as-cast high-entropy alloys showed an ultimate compression strength (UCS) of ∼1400 MPa, which after sintering and compaction at 1273 K increased up to ∼2400 MPa. Extensive transmission electron microscopy quantitative analyses were carried out to model the UCS. A quite good agreement between the microstructure-strengthening model and the experimental UCS was found.

The Effect of Alloying Elements on Thermal Conductivity of Aluminum Alloys in High Pressure Die Casting

2013 ◽  
Vol 813 ◽  
pp. 175-178 ◽  
Author(s):  
Cheol Woo Kim ◽  
Jae Ik Cho ◽  
Se Weon Choi ◽  
Young Chan Kim
Keyword(s):  
Thermal Conductivity ◽  
Aluminum Alloys ◽  
Die Casting ◽  
Pure Aluminum ◽  
High Thermal Conductivity ◽  
Alloying Elements ◽  
Alloying Element ◽  
Casting Alloys ◽  
Pressure Die Casting ◽  
Effect Of Alloying

Recently, demand of aluminum alloys for manufacturing in components with high thermal conductivity application increases. However, the most aluminum die casting alloys exhibit very lower thermal properties, about only a half of pure aluminum. In die casting alloys, alloying elements are essential to obtain sufficient fluidity and mechanical strength, therefore, in this study, the effect of alloying elements, Si, Cu, Mg, Fe and Mn, on thermal conductivity, die casting characteristics and mechanical properties were analyzed and the appropriate amount of each alloying element were investigated. The results showed that Mn had the most deleterious effect in thermal conductivity and Si and Fe contents were important to improve fluidity and strength. The alloy with 1.5~2.0wt.%Si and 0.6wt.%Fe showed very good combination of high thermal conductivity and sufficient casting characteristics.

Powder metallurgy processing of ruthenium aluminum alloys

2004 ◽  
Vol 153-154 ◽  
pp. 952-957 ◽  
Author(s):  
Anil Bora ◽  
P.P. Singha ◽  
P.S. Robi ◽  
A. Srinivasan
Keyword(s):  
Powder Metallurgy ◽  
Aluminum Alloys

scholarly journals The Directions of Creation of Unique Technologies in Medicine on the Basis of New Generation of Biocompatible Materials and Implants With Shape Memory

2017 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
V.E. Gunther
Keyword(s):  
High Temperature ◽  
Powder Metallurgy ◽  
Shape Memory ◽  
Biocompatible Materials ◽  
Induction Melting ◽  
Temperature Synthesis ◽  
New Class ◽  
High Temperature Synthesis ◽  
Melting Technique ◽  
New Generation

The article describes the main directions of creation of unique technologies in medicine on the basis of new generation of biocompatible materials and implants with shape memory effect (SME). Physical and biological fundamentals and principles of creating a new class of biocompatible superelastic TiNi-based materials were drafted. Manufacturing technique of TiNi-based materials with using the induction melting technique, self-extending high-temperature synthesis and powder metallurgy with a certain complex of properties for various fields of medicine have been developed.

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