Modelling of macrosegregation: applications and future needs

C Beckermann - International Materials Reviews, 2002 - journals.sagepub.com
Modelling and simulation of macrosegregation has experienced explosive growth since the
pioneering studies of Flemings and co-workers in the mid-1960s. This paper presents a …

Understanding mechanisms of grain refinement of aluminium alloys by inoculation

TE Quested - Materials Science and Technology, 2004 - journals.sagepub.com
For over half a century, grain refinement of aluminium alloys has been achieved by chemical
inoculation; current grain-refinement practice involves the addition of master alloys (eg Al–Ti …

Particle distribution in cast metal matrix composites—Part I

J Hashim, L Looney, MSJ Hashmi - Journal of Materials Processing …, 2002 - Elsevier
The widespread adoption of particulate metal matrix composites (MMCs) for engineering
applications has been hindered by the high cost of producing components of even minimally …

Refinement of eutectic silicon phase of aluminum A356 alloy using high-intensity ultrasonic vibration

X Jian, TT Meek, Q Han - Scripta Materialia, 2006 - Elsevier
The eutectic silicon in A356 alloy can be refined and modified using either chemical,
quench, or superheating modification. We observed, for the first time, that the eutectic silicon …

Grain refinement of Al alloys: Mechanisms determining as-cast grain size in directional solidification

TE Quested, AL Greer - Acta Materialia, 2005 - Elsevier
Control of as-cast grain size is important for aluminium alloys and is achieved by inoculation.
The usual analysis of grain refining (based on recalescence in small test samples) is not …

Synchrotron X-ray imaging of directed energy deposition additive manufacturing of titanium alloy Ti-6242

Y Chen, SJ Clark, L Sinclair, CLA Leung, S Marussi… - Additive …, 2021 - Elsevier
Abstract Directed Energy Deposition Additive Manufacturing (DED-AM) is transformative for
the production of larger, geometrically complex metallic components. However, the …

Particle engulfment and pushing by solidifying interfaces: Part II. Microgravity experiments and theoretical analysis

DM Stefanescu, FR Juretzko, A Catalina… - … Materials Transactions A, 1998 - Springer
Results of the directional solidification (DS) experiments on particle engulfment and pushing
by solidifying interfaces (PEP), conducted on the space shuttle Columbia during the Life and …

Crystallography of engulfed and pushed TiB2 particles in aluminium

PL Schaffer, DN Miller, AK Dahle - Scripta Materialia, 2007 - Elsevier
TiB2 particles were observed at the grain boundaries of an Al casting, suggesting they were
pushed during solidification; however, a small proportion were retained within the α-Al …

Fluidity of alloys under high-pressure die casting conditions: flow-choking mechanisms

Q Han, J Zhang - Metallurgical and Materials Transactions B, 2020 - Springer
Theories on fluidity of alloys based on the solidification mode are not satisfactory in
describing fluidity of alloys under high-pressure die casting (HPDC) conditions. To …

Interaction between nucleant particles and a solid-liquid interface in Al-4.5 Cu alloy

Y Liu, Q Han - Acta Materialia, 2021 - Elsevier
Abstract Al 3 Ti and TiB 2 particles were made in-situ from adding halide salts in molten Al-
4.5 wt% Cu alloys. The molten halide salts also dissolved the oxide in the molten metal to …