Results 1 to 10 of about 60 (60)

Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion [PDF]

open access: yesMetals, 2020
In situ synthesized TiB whiskers (TiBw) reinforced Ti-15Mo-3Al-2.7Nb-0.2Si alloys were successfully manufactured by pre-sintering and canned hot extrusion via adding TiB2 powders. During pre-sintering, most TiB2 were reacted with Ti atoms to produce TiB. During extrusion, the continuous dynamic recrystallization (CDRX) of β grains was promoted with the
Wenzhen Chen   +5 more
openaire   +3 more sources

Microstructural refinement and mechanical properties improvement of elemental powder metallurgy processed Ti-46.6Al-1.4Mn-2Mo alloy by carbon addition [PDF]

open access: yesMetallurgical and Materials Transactions A, 2001
Strengthening of a gamma TiAl alloy was sought by a chemical modification of the composition with carbon. Up to 0.6 at. pct of carbon was added to the Ti-46.6Al-1.4Mn-2Mo alloy processed by elemental powder metallurgy. Carbon addition resulted in considerable microstructural changes such as refinement, by a factor of about 2, of the lamellar ...
h. s. park   +5 more
openaire   +3 more sources

Microstructure Control of Steels through Dispersoid Metallurgy Using Novel Grain Refining Alloys

open access: yesISIJ International, 2006
This paper describes how small inclusions (designated dispersoids) can be used to control the microstructure of steels. The term "dispersoids" refers to oxides, sulphides, nitrides and carbides which are in the 1 μm size range and capable of promoting grain refinement during solidification by a process of epitaxial nucleation or in the solid state ...
Leiv Kolbeinsen   +3 more
openaire   +3 more sources

Crystallographic Texture and Grain Refinement in the CuCr Alloy Deformed by SPD Method [PDF]

open access: yesArchives of Metallurgy and Materials, 2019
Microstructure and texture of the CuCr0.6 alloy processed by rolling with cyclic movement of rolls (RCMR) at room temperature were investigated. The RCMR processing was applied for the samples in different initial conditions in the solid solution followed by quenching into iced water at 1000oC for 3 h and in aging treatment conditions performed at ...
A. Urbańczyk-Gucwa   +3 more
openaire   +2 more sources

Numerical Modelling of Metal Melt Refining Process in Ladle With Rotating Impeller and Breakwaters [PDF]

open access: yesArchives of Metallurgy and Materials, 2019
The paper describes research and development of aluminium melt refining technology in a ladle with rotating impeller and breakwaters using numerical modelling of a finite volume/element method. The theoretical aspects of refining technology are outlined. The design of the numerical model is described and discussed.
Karel Michalek   +6 more
openaire   +1 more source

Fading mechanism on grain refinement and modification with Al-B-Sr master alloys in an aluminium-silicon cast alloy

open access: yesArchives of Metallurgy and Materials, 2021
A fading mechanism during casting of treated Al-B-Sr master alloys in an aluminium-silicon cast alloy was investigated. Two different master alloys, the Al-3%B-3%Sr and Al-4%B-1%Sr were demonstrated for the efficiency test both grain refinement and modification microstructure.
P. Muangnoy, K. Eidhed
openaire   +2 more sources

Toz Metalurjisi Yöntemi ile Tane İnceltici Üretimi ve Döküm Performansının İncelenmesi

open access: yesUluslararası Muhendislik Arastirma ve Gelistirme Dergisi, 2023
Alüminyum ve alaşımlarına uygulanan tane inceltme işlemi özellikle döküm alüminyum alaşımların mekanik ve dökülebilirlik özelliklerini iyileştirmede kullanılan bir işlemdir. Ticari olarak alüminyumun titanyum ve bor içeren halojenür tuzların ergitilmesi ile üretilen master alaşımlar kullanılmaktadır.
Ramazan CAN   +3 more
openaire   +2 more sources

Acoustic emission snalysis of the plastic deformation stages of degraded low-carbon steel after long-term operation in the oil refining and petrochemical processing [PDF]

open access: yesArchives of Metallurgy and Materials, 2019
This paper presents results obtained from a laboratory investigation conducted on material from a pressure vessel after longterm operation in the oil refinery industry. The tested material contained structural defects which arose from improper heat treatment during steel plate manufacturing. Complex tensile tests with acoustic emission signal recording
I. Lyasota, Ł. Sarniak, Piotr Kustra
openaire   +2 more sources

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