Effects of Melt Treatment on Dendrite Coherency of A357 Alloy
The Dendrite Coherency Point (DCP) of A357 alloy was determined after different melt treatments by double thermocouples, and the coherency solid fraction (fscoh) was calculated by thermal analysis. The results of dendrite coherency properties show that fscoh values increase with increased cooling rate for A357 alloy. For A357 alloys, fscoh values increase after grain refined and melt superheat treatment. The coherency point was found to be dependent on not only the morphology of the dendrites but also the dendrite growth rate.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Z. W. Chen et al., "Effects of Melt Treatment on Dendrite Coherency of A357 Alloy", Advanced Materials Research, Vols. 189-193, pp. 3886-3890, 2011