Author:
Promakhov Vladimir,Khmeleva Marina,Zhukov Ilya,Platov Vladimir,Khrustalyov Anton,Vorozhtsov Alexander
Abstract
A series of casting experiments was conducted with A356 aluminum alloys by applying vibration treatment and using Al-TiB2 composite master alloys. The main vibration effects include the promotion of nucleation and a reduction in as-cast grain size. Using composite master alloys with titanium diboride microparticles allows further reduction in the average grain size to 140 µm. The reasons for this behavior are discussed in terms of the complex effect on the melt, considering the destruction of dendrites, and the presence of additional crystallization centers. Tensile tests were performed on the samples obtained during the vibration treatment and with titanium diboride particles. The tensile strength increased from 182 to 227 MPa after the vibration treatment for the alloys containing titanium diboride.
Funder
Russian Science Foundation
Subject
General Materials Science,Metals and Alloys
Cited by
16 articles.
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