Microstructure and hardness behaviours of Ti-containing Al-Si alloys

N. Saheb, T. Laoui, A. R. Daud, R. Yahaya, Shahidan Radiman

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The microstructures and microhardnesses of Al-12 wt% Si and Al-17.5 wt% Si alloys, with Ti contents up to 4 wt%, prepared by rapid cooling, were investigated. An extension of Si solubility in Al as a result of rapid cooling was measured. The addition of Ti to Al-12 wt% Si alloy led to the precipitation of the intermetallic compound Al3Ti which dissolves up to 13.12 at.% Si, while its addition to Al-17.5 wt% Si alloy led to the precipitation of the ternary compound AlSi2Ti. The microhardness of both as-cast alloys increased with increase in Ti content as a result of the precipitated phases. During isothermal heat treatment, the as-cast alloys showed some response to age hardening at 200°C, but a decrease in the microhardness was measured at 400°C.

Original languageEnglish
Pages (from-to)803-814
Number of pages12
JournalPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Volume82
Issue number4
DOIs
Publication statusPublished - 10 Mar 2002

Fingerprint

Microhardness
microhardness
lead alloys
Lead alloys
cast alloys
hardness
Hardness
microstructure
Microstructure
Cooling
cooling
precipitation hardening
Age hardening
Intermetallics
intermetallics
heat treatment
solubility
Solubility
Heat treatment

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

Cite this

Microstructure and hardness behaviours of Ti-containing Al-Si alloys. / Saheb, N.; Laoui, T.; Daud, A. R.; Yahaya, R.; Radiman, Shahidan.

In: Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, Vol. 82, No. 4, 10.03.2002, p. 803-814.

Research output: Contribution to journalArticle

@article{ca80512c3a41474baf2a820396cc3742,
title = "Microstructure and hardness behaviours of Ti-containing Al-Si alloys",
abstract = "The microstructures and microhardnesses of Al-12 wt{\%} Si and Al-17.5 wt{\%} Si alloys, with Ti contents up to 4 wt{\%}, prepared by rapid cooling, were investigated. An extension of Si solubility in Al as a result of rapid cooling was measured. The addition of Ti to Al-12 wt{\%} Si alloy led to the precipitation of the intermetallic compound Al3Ti which dissolves up to 13.12 at.{\%} Si, while its addition to Al-17.5 wt{\%} Si alloy led to the precipitation of the ternary compound AlSi2Ti. The microhardness of both as-cast alloys increased with increase in Ti content as a result of the precipitated phases. During isothermal heat treatment, the as-cast alloys showed some response to age hardening at 200°C, but a decrease in the microhardness was measured at 400°C.",
author = "N. Saheb and T. Laoui and Daud, {A. R.} and R. Yahaya and Shahidan Radiman",
year = "2002",
month = "3",
day = "10",
doi = "10.1080/01418610110090909",
language = "English",
volume = "82",
pages = "803--814",
journal = "Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties",
issn = "0141-8610",
publisher = "Taylor and Francis Ltd.",
number = "4",

}

TY - JOUR

T1 - Microstructure and hardness behaviours of Ti-containing Al-Si alloys

AU - Saheb, N.

AU - Laoui, T.

AU - Daud, A. R.

AU - Yahaya, R.

AU - Radiman, Shahidan

PY - 2002/3/10

Y1 - 2002/3/10

N2 - The microstructures and microhardnesses of Al-12 wt% Si and Al-17.5 wt% Si alloys, with Ti contents up to 4 wt%, prepared by rapid cooling, were investigated. An extension of Si solubility in Al as a result of rapid cooling was measured. The addition of Ti to Al-12 wt% Si alloy led to the precipitation of the intermetallic compound Al3Ti which dissolves up to 13.12 at.% Si, while its addition to Al-17.5 wt% Si alloy led to the precipitation of the ternary compound AlSi2Ti. The microhardness of both as-cast alloys increased with increase in Ti content as a result of the precipitated phases. During isothermal heat treatment, the as-cast alloys showed some response to age hardening at 200°C, but a decrease in the microhardness was measured at 400°C.

AB - The microstructures and microhardnesses of Al-12 wt% Si and Al-17.5 wt% Si alloys, with Ti contents up to 4 wt%, prepared by rapid cooling, were investigated. An extension of Si solubility in Al as a result of rapid cooling was measured. The addition of Ti to Al-12 wt% Si alloy led to the precipitation of the intermetallic compound Al3Ti which dissolves up to 13.12 at.% Si, while its addition to Al-17.5 wt% Si alloy led to the precipitation of the ternary compound AlSi2Ti. The microhardness of both as-cast alloys increased with increase in Ti content as a result of the precipitated phases. During isothermal heat treatment, the as-cast alloys showed some response to age hardening at 200°C, but a decrease in the microhardness was measured at 400°C.

UR - http://www.scopus.com/inward/record.url?scp=0036278219&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036278219&partnerID=8YFLogxK

U2 - 10.1080/01418610110090909

DO - 10.1080/01418610110090909

M3 - Article

VL - 82

SP - 803

EP - 814

JO - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties

JF - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties

SN - 0141-8610

IS - 4

ER -