Review on the mechanisms of modification Al-Si alloys
Other Title(s)
مقالة مراجعة حول اليات تعديل سبائك الالمنيوم-سليكون
Author
Source
Journal of University of Babylon for Engineering Sciences
Issue
Vol. 27, Issue 1 (31 Jan. 2019), pp.338-343, 6 p.
Publisher
Publication Date
2019-01-31
Country of Publication
Iraq
No. of Pages
6
Main Subjects
Abstract EN
The present paper investigates some mechanisms of modification the eutectic of aluminum-Silicon (Al-Si) alloys.
these alloys have been many applications in general industries especially in military, aerospace and automobiles.
these alloys in some cases need to modify their properties in particular the wear resistance.
this can be overcome by modification the morphology of si-eutectic.
many mechanisms were suggested in this field.
the most common mechanisms are chemical modification and quenching modification.
the chemical modification achieved by adding some rare earth elements like sodium (Na), strontium (Sr), and antimony (Sb).
also can be refined the structure of these alloys by using master alloys such as Al-Ti, Al-Ti-B and Al-B.
according to restricted growth theory, the impurity induced twinning which reduce the growth.
According to the restricted nucleation, the twin plane re-entrant edge (TPRE) poisoning, which stopped the twin plane.
the addition of sodium (Na) in the range of 0.005 to 0.01% modifies the eutectic Si but it has high vapourity and it is difficult to determine its resulting level.
Strontium is added in a range of 0.02 to 0.04% but it is ability to oxidation is high as contact with atmosphere.
American Psychological Association (APA)
Jasim, Talib Abd al-Amir. 2019. Review on the mechanisms of modification Al-Si alloys. Journal of University of Babylon for Engineering Sciences،Vol. 27, no. 1, pp.338-343.
https://search.emarefa.net/detail/BIM-918211
Modern Language Association (MLA)
Jasim, Talib Abd al-Amir. Review on the mechanisms of modification Al-Si alloys. Journal of University of Babylon for Engineering Sciences Vol. 27, no. 1 (2019), pp.338-343.
https://search.emarefa.net/detail/BIM-918211
American Medical Association (AMA)
Jasim, Talib Abd al-Amir. Review on the mechanisms of modification Al-Si alloys. Journal of University of Babylon for Engineering Sciences. 2019. Vol. 27, no. 1, pp.338-343.
https://search.emarefa.net/detail/BIM-918211
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 341-342
Record ID
BIM-918211