Mekanik alaşımlama ile üretilen Al-Al4C3 kompozit malzemede presleme basıncı ve sinterleme sıcaklığının mekanik özellikler üzerine etkisinin araştırılması

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Thesis Type: Postgraduate

Institution Of The Thesis: Gazi University, Fen Bilimleri Enstitüsü, METAL EĞİTİMİ ANABİLİM DALI, Turkey

Approval Date: 2002

Thesis Language: Turkish

Student: CENGİZ BAĞCI

Supervisor: HALİL ARIK

Abstract:

INVESTIGATION OF INFLUENCES OF PRESSING PRESSURE AND SINTERING TEMPERATURE ON THE MECHANICAL PROPERTIES OF AI-AI4C3 COMPOZITE MATERIALS (M.Sc.Thesis) Cengiz BA?CI GAZI UNIVERSITY INSTUTE OF SCIENCE AND TECHNOLOGY January 2002 ABSTRACT In this study, aluminum powders contained 2-4 wt % carbon black were mechanically alloyed in high energy ball mill for 20 hours. Mechanically alloyed powders were compacted at various pressures (400, 500, 600 and 700 MPa) to produce block samples. Blocks were then sintered at various temperatures (500, 600, 650 and 700 °C) for 5 hours under argon atmosphere in a tube furnace. XRD analyses were carried out to find the AI4C3 transformation. SEM analyses were conducted to determine the sintering behavior of powders. Transverse reptute strength and hardness tests were carried out to determine the mechanical properties of blocks. The results showed that the ideal compacting pressure was 600 MPa and sintering temperature was 650 °C for optimun mechanical properties. Science Code : 225 01 01 Key Words : Mechanical Alloying, Composite, AI4C3, Mechanical Properties Page number : 84 Adviser : Asst. Prof. Dr. Halil ARIK ©OKUMANI*-"