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Metallurgical and Materials Transactions A

Metallurgical and Materials Transactions A OnlineFirst articles

21-09-2021 | Original Research Article

Role of Ti on Phase Evolution, Oxidation and Nitridation of Co–30Ni–10Al–8Cr–5Mo–2Nb–(0, 2 & 4) Ti Cobalt Base Superalloys at Elevated Temperature

Titanium is an important alloying addition to γ/γ′ cobalt-based superalloys that enhances the high temperature microstructural stability and make the alloys lighter. In this work, we probe the role of Ti composition on the phase stability and …

21-09-2021 | Original Research Article

Dwell-Fatigue of Ni-Based Superalloys with Serrated and Planar Grain Boundary Morphologies: The Role of the γ′ Phase on Strain Accumulation and Cavitation

The effect of grain boundary (GB) morphology on the cavitation behavior in a Ni-based superalloy, RR1000, was studied during elevated temperature dwell-fatigue at 700 °C. Following a solution heat treatment, the material was control cooled at two …

20-09-2021 | Original Research Article Open Access

Ab Initio Study of the Influence of Alloying Elements on Stability and Mechanical Properties of Selected TixAly Intermetallic Compounds and Their TixAly/Al, TixAly/Ti Interfaces in Explosively Welded Metal–Metal Composites

The overall performance of joints fabricated using the explosive welding method depends directly on the brittleness of created intermetallic phases and their cohesion with metallic substrates. In this article, we used first principles calculations …

19-09-2021 | Original Research Article

Numerical Modeling of Gas Tungsten Arc Welding of a Newly Developed Cobalt-Based Superalloy

A three-dimensional finite-element thermal model with a volumetric moving heat source is developed to simulate the gas tungsten arc welding process of a newly developed cobalt-based superalloy, CoWAlloy1. The model shows that the geometry of the …

14-09-2021 | Original Research Article

The Structural Evolution and Densification Mechanisms of Nanophase Separation Sintering

Nanophase separation sintering (NPSS) facilitates low temperature, pressureless sintering through the formation of solid phase necks driven by phase separation. Systems that have been shown to exhibit this phenomenon are W–Cr, Cr–Ni and to a …

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About this journal

Metallurgical and Materials Transactions A focuses on the latest research in all aspects of physical metallurgy and materials science. It explores relationships among processing, structure, and properties of materials; publishes critically reviewed, original research of archival significance.

The journal address the main topics of alloy phases; transformations; transport phenomena; mechanical behavior; physical chemistry; environment; welding & joining; surface treatment; electronic, magnetic & optical material; solidification; materials processing; composite materials; biomaterials; and light metals. MMTA publishes Technical Publications, Communications, Symposia, and more.

Published with ASM International, The Materials Information Society and The Minerals, Metals & Materials Society (TMS)

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