Investigation of phosphorus-containing compounds in aluminum alloys with emphasis on the formation mechanism

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

It is well known that the presence of phosphorus in hypoeutectic Al-Si alloys causes coarsening of Al-Si eutectic even when the phosphorus concentration is as low as a few ppm. The reason is that phosphorus reacts with aluminum to form AlP, the particles of which serve as potential nuclei for silicon due to a very similar lattice parameter with Si. The purpose of this study is to investigate the possibilities for reducing the nucleation potency of AlP by changing the alloy chemistry. The experiments include melting and solidification of a number of aluminum alloys under different conditions. After that, the samples are examined using SEM and TEM microscopy to elucidate the presence of phosphorus-containing compounds and to explain their formation mechanism. The experimentally obtained data are discussed on a systematic basis of thermodynamic calculations and compared with the corresponding data from the relevant literature. Particularly, the results reveal that such elements as Mg, Ca and Sr are potentially capable of neutralizing the nucleation activity of AlP although their effect is dependent on the presence of other chemical elements in the aluminum alloy.

本文言語English
ホスト出版物のタイトルThe 15th International Conference on Aluminium Alloys, ICAA
編集者Qing Liu, Robert Sanders, Zhihong Jia, Lingfei Cao, Jian-Feng Nie, Jian-Feng Nie
出版社Trans Tech Publications Ltd
ページ132-138
ページ数7
ISBN(印刷版)9783035710502
DOI
出版ステータスPublished - 2017
イベント15th International Conference on Aluminium Alloys, ICAA 2016 - Chongqing, China
継続期間: 2016 6月 122016 6月 16

出版物シリーズ

名前Materials Science Forum
877
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

Other15th International Conference on Aluminium Alloys, ICAA 2016
国/地域China
CityChongqing
Period16/6/1216/6/16

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

フィンガープリント

「Investigation of phosphorus-containing compounds in aluminum alloys with emphasis on the formation mechanism」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル