Metallurgical Abstracts on Light Metals and Alloys vol.54
Evaluation of Grain Refining Performance of Aluminum Cast Using TP-1 Test Mold
Yoshimi Watanabe*, Ryo Kagimoto*, Soichiro Iwata*, Motoko Yamada*, Mami Mihara-Narita*, Hisashi Sato* and Shin-ichi Shimasaki**
*Nagoya Institute of Technology
**National Institute of Technology, Kagawa College
[Published in Journal of Japan Institute of Light Metals, Vol. 71(2021), pp. 8–15]
https://www.jstage.jst.go.jp/article/jilm/71/1/71_7101-01/_article/-char/en
E-mail: yoshimi[at]nitech.ac.jp
Key Words：Aluminum; casting; grain refinement; Al-Ti-B grain refiner; Standard Test Procedure for Aluminum Alloy Grain Refiners（TP-1）
AA-TP1 (Standard Test Procedure for Aluminum Alloy Grain Refiners; TP-1 test) is one of the evaluation tests of aluminum grain refiner. Although it is the most well-maintained test at present, it is not easy to perform the test by academic institutions because it requires a large amount of molten metal. In this study, we propose new evaluation method of grain refining performance of aluminum cast using TP-1 test mold. Effects of temperature of molten metal, holding time after addition of refiner (Al-5%Ti-1%B) and preheating temperature of the mold for macrostructure of as-cast pure Al were examined. Obtained results were compared with the microstructure obtained by conventional TP-1 test.
Relationship between average grain size and position of macrostructure observation.