Akademik Veri Yönetim Sistemi
6. Uluslararası Mühendislik Mimarlık ve Tasarım Kongresi, İstanbul, Türkiye, 17 - 18 Aralık 2020, cilt.1, sa.36934, ss.215-222
Even though there are several methods to obtain refined grains in the cast microstructure,
grain refining via chemical agents introducing to the liquid metal is a common practice to procure enhanced properties of both net-shape and near-net shape parts for casting applications. The importance
of fine grains in contrast to columnar grains is known for casting. A fine-grained structure has reduced
anisotropy, good formability, and less segregation. Besides, efforts of casting engineers always are attempted to attain more refined cast structures, thus, this trial is focused on semi-continuous casting system of copper alloys. In addition, the grain refining mechanism provides hot tear resistance, casting
fluidity, and increased surface quality for some alloys. It has importance in copper alloys as well as
resistance in hot tear resistance. In this study, grain refinement behavior of six different hot-rolled
CuZn10 copper alloys was investigated. 0.01, 0.03, 0.06, 0.09, 0.12, and 0.15 wt.% Fe were added to
the brass melt. Tensile tests were performed to evaluate the effect of Fe element as a grain refiner, and
values of the mechanical tests were measured according to ASTM E8 / E8M-16ae1. A correlation was
established between Fe% and mechanical properties. Also, microstructural analyzes were conducted via
optical microscope to examine the average grain size.