Room temperature mechanical properties of the Al/(AlCuFe)p and Al96Cu4/(AlCuFe)p cast composites were estimated from uniaxial compressive test and continuous ball indentation technique. Values of the Young's modulus and yield stress determined from continuous ball indentation tests were slightly overestimated, suggesting a surface effect on the mechanical properties. However, it was shown that the Al-Cu-Fe particles provided a significant increase of the elastic modulus, yield stress, and strain hardening, especially in the range up to 10% volume fraction of reinforcements. Also, determination of the hardness by continuous-ball-indentation tests revealed a strong influence of the matrix strength on the mechanical properties of the conventionally cast composites.
Bibliographical noteFunding Information:
The authors are grateful for the financial support by the Creative Research initiatives of the Korean Ministry of Science and Technology. The technical assistance of Dr. Ha Jeong-Soo and Mr. Chang Sung-Ho, of the Research Institute of the Korea Electric Power Corporation (KEPRI) in Taejon, with the continuous ball indentation test was particularly appreciated.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry