Casting Surface of AZ91 Alloy and Its Reaction with Sand Mold

• Takamori Susumu

  Structural Metals Center, National Institute for Materials Science

• Osawa Yoshiaki

  Structural Metals Center, National Institute for Materials Science

• Kimura Takashi

  Structural Metals Center, National Institute for Materials Science

• Liu Xinbao

  Structural Metals Center, National Institute for Materials Science

• Mukai Toshiji

  Structural Metals Center, National Institute for Materials Science

Abstract

Due to its light weight and abundance as a resource, the utilization of magnesium is increasing. AZ91 alloy is the most common cast magnesium alloy and is widely used as die-casting material. AZ91 is also used for sand mold casting. In sand mold casting, reaction with mold sand is expected because magnesium is a very reactive element. This study investigated the surface condition of AZ91 castings using sand mold.<BR>Higher pouring temperature promoted the reaction with silica sand, and the surface of castings became rough. Reacting with mold sand, Mg₂Si and Mg and Al complex oxides were precipitated near the casting surface.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 49 (5), 1089-1092, 2008

  The Japan Institute of Metals and Materials

Keywords

• AZ91
• magnesium
• sand mold
• casting surface
• reaction

Details

• CRID: 1390001204249731072
• NII Article ID: 10021146829
• NII Article ID: 130004453966
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.mc200727
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 9480688
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9480688
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/49/5/49_MC200727/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed