Characteristics of ceramic particle reinforced Al composite powder manufactured by a stone mill type crusher using twin roll cast Al alloy flake: a model on the formation of composite powder

2001 ◽  
Vol 304-306 ◽  
pp. 632-636 ◽  
Author(s):  
J.H. Lee ◽  
T.S. Kim ◽  
D.Y. Maeng ◽  
H.T. Son ◽  
S.J. Hong ◽  
...  
Keyword(s):  
Composite Powder ◽  
Ceramic Particle ◽  
Al Alloy ◽  
Al Composite ◽  
Twin Roll Cast ◽  
Twin Roll

Factors Affecting the Separation of Ti-Al Alloy in the TiPro Process

2013 ◽  
Vol 551 ◽  
pp. 44-54
Author(s):  
Kenneth Sichone ◽  
De Liang Zhang ◽  
Stella Raynova
Keyword(s):  
Powder Particle ◽  
Composite Powder ◽  
Al Alloy ◽  
Composite Powders ◽  
Factors Affecting ◽  
Al Composite ◽  
Al2o3 Phase ◽  
The University ◽  
Solid Liquid ◽  
Solid Liquid Separation

Abstract This paper presents and discusses the factors influencing the yield of Ti-Al alloy in the TiPro process which is a process developed at the University of Waikato for producing titanium alloy powders by mechanically activating Al/TiO2 powder mixtures and subsequently preheating the resultant composite powder in order to ignite a combustion synthesis reaction and separate the liquid Ti-Al alloy by extrusion. In this study, TiO2/Al composite powders with different powder particle microstructures have been produced and used to study the effects of starting composite powder particle microstructure on the solid/liquid separation of TiAl from solid Al2O3 by extrusion. Results obtained so far indicate that maximizing the time the Ti-Al alloy phase is maintained in the liquid state after the reaction between TiO2 and Al is one of the critical factors to increase the yield of Ti-Al alloy produced through the separation of liquid Ti-Al from the solid Al2O3 phase by extruding the mixture of liquid Ti-Al and Al2O3 formed through reactions and heating.

Differential speed rolling of twin-roll-cast 6xxx al alloy strips and its influence on the sheet formability

2015 ◽  
Vol 22 (1) ◽  
pp. 108-117 ◽  
Author(s):  
Seong-Guk Son ◽  
Hong-Kyu Kim ◽  
Jae-Hyung Cho ◽  
Hyung-Wook Kim ◽  
Jae-Chul Lee
Keyword(s):  
Al Alloy ◽  
Sheet Formability ◽  
Differential Speed Rolling ◽  
Twin Roll Cast ◽  
Twin Roll ◽  
Differential Speed

Microstructural Evaluation during Melt Conditioned Twin Roll Casting (MC-TRC) of Al-Mg Binary Alloys

2014 ◽  
Vol 790-791 ◽  
pp. 285-290 ◽  
Author(s):  
Nilam S. Barekar ◽  
Sanjeev Das ◽  
Zhong Yun Fan ◽  
Richard Cinderey ◽  
N. Champion
Keyword(s):  
New Technology ◽  
Model Alloy ◽  
Al Alloy ◽  
Solute Content ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Microstructural Evaluation ◽  
Commercial Applications ◽  
Twin Roll Cast ◽  
Twin Roll

Twin-roll casting (TRC) is an established route to produce sheets of aluminium alloys. Despite enormous potential, severe centreline segregation arising during casting limits the extension of alloy range suitable for commercial applications. At given casting conditions, the centreline segregation in conventional twin-roll-cast strip increases as the solute content in the alloy (and hence freezing range) increases. To improve the quality of the TRC strips, a new technology, melt conditioning twin roll casting (MC-TRC) has been developed. Enhanced nucleation by melt conditioning favours the advance of an equiaxed solidification front during solidification. It has been demonstrated that the MC-TRC process is capable of producing high quality Al-alloy strips with minimal centreline segregation. In this paper we use binary Al-Mg as a model alloy to investigate the composition limit (the maximum Mg concentration) for the MC-TRC strip without centreline segregation.

6xxx Series Al Alloy Sheets with High Formability Produced by Twin-roll Strip Casting and Asymmetric Rolling

2012 ◽  
Vol 50 (7) ◽  
pp. 503-509 ◽  
Author(s):  
Jae-Chul Lee ◽  
Hong-Kyu Kim ◽  
Jae-Hyung Cho ◽  
Hyoung-Wook Kim
Keyword(s):  
Strip Casting ◽  
Al Alloy ◽  
Asymmetric Rolling ◽  
6Xxx Series ◽  
Twin Roll

Direct Cladding from Molten Metals of Aluminum and Magnesium Alloys Using a Tandem Horizontal Twin Roll Caster

2015 ◽  
Vol 772 ◽  
pp. 250-256 ◽  
Author(s):  
Hideto Harada ◽  
Shin Ichi Nishida ◽  
Mayumi Suzuki ◽  
Hisaki Watari ◽  
T. Haga
Keyword(s):  
Surface Condition ◽  
Hardness Test ◽  
Al Alloys ◽  
Mg Alloy ◽  
Al Alloy ◽  
Molten Metals ◽  
Electron Probe Micro Analyzer ◽  
Twin Roll Caster ◽  
Aluminum And Magnesium Alloys ◽  
Twin Roll

This paper describes direct cladding of magnesium (Mg) and aluminum (Al) alloys using a tandem horizontal twin roll caster that has three pairs of upper and lower rolls. Manufacturing conditions that are appropriate for fabricating Al/Mg and Al/Mg/Al cladded material were investigated. The surface condition of the cladded cast strip was examined. An electron probe micro analyzer was used to observe the interface between Al alloy and Mg alloy. The thickness of the mixed layer of Al and Mg alloy was 15μm, and how the materials were connected was clarified. Microscopic observation and backscattered electron analysis were used to investigate the cladding mechanisms of the Al and Mg alloy layers. Average hardness was determined using the Vickers hardness test at the Al layer and at the diffused layer between Mg and Al alloys. Cladding of Al/Mg alloy and A/Mg/Al alloy was possible using a tandem twin-roll caster. In addition, Al3Mg2 and Al12Mg17 phase precipitation at the interface of the Al and Mg alloys was confirmed during direct cladding from molten metals.

scholarly journals Analysis of defects in a twin roll cast Mg‐Y‐Zn magnesium alloy

2021 ◽  
Author(s):  
Kristina Kittner ◽  
Madlen Ullmann ◽  
Falko Arndt ◽  
Susanne Berndorf ◽  
Thorsten Henseler ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Twin Roll Cast ◽  
Twin Roll
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