|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Phase Formation in Cu - Zn Powder Mixtures Subjected to Ultrasonic Powder Consolidation
||Azin Houshmand, Teiichi Ando
|On-Site Speaker (Planned)
Microstructural changes and interdiffusion in Cu – 48 mass% Zn specimens prepared by ultrasonic powder consolidation (UPC) were investigated by optical microscopy, SEM and X-ray diffraction. Fully dense, metallurgically consolidated specimens 4 mm in diameter and about 1 mm in thickness were obtained at nominal consolidation temperatures of 423 - 573 K in just 1 – 4 s. During the few seconds of UPC, significant interdiffusion between Cu and Zn occurred, producing the intermediate gamma brass phase (~ Cu5Zn3). However, beta brass was the intermediate phase to form during UPC when the elemental powder mixture was subjected to ball-milling for a short duration or heat treatment before UPC. The effects of ultrasonic deformation on the phase formation are discussed.
||Planned: Supplemental Proceedings volume