Microstructures of SiCp/MR64 composite prepared by detonation-gaseous spray deposition of mechanically alloyed powders

Journal Article · Fri Jul 01 00:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

OSTI ID:7107968

Chengwei, Che; Rang, Yang; Zizhang, Xie; Qing, Zhao ^[1]

---

1. Univ. of Science and Technology, Beijing (China)

The existence of amorphous structures will be reported for the first time in the deposited layer by detonation-gaseous spray deposition of mechanically alloyed SiCp/MR64 powders. MMCs are basically made in two ways: ingot metallurgy (IM) and powder metallurgy (PM). Some interesting results have been reported in preparing SiC particulate reinforced aluminium matrix composites by mechanical alloying. Obviously, using mechanically alloyed powders for preparation of MMCs greatly reduces the grain size of aluminium matrices and refines the SiC particles and disperses them within the aluminium powders. In previous PM techniques, hot extrusion was generally selected as the last forming step, but in doing so, the available characteristics of mechanically alloyed powders were lost. To retain the structural characteristics of MA powders rapid solidification techniques could be utilized. Thus, detonation-gaseous spray deposition (DGSD), previously used for surface spraying to obtain specific properties, is used to prepare SiCp/MR64 composites.

• OSTI ID: 7107968
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:1; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
AMORPHOUS STATE
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
COPPER ALLOYS
DATA
EXPERIMENTAL DATA
FABRICATION
INFORMATION
MAGNESIUM ALLOYS
MATERIALS
MICROSTRUCTURE
NUMERICAL DATA
SILICON CARBIDES
SILICON COMPOUNDS
ZINC ALLOYS