Influence of Al–5Ti–1B master alloy addition on the grain size of AZ91 alloy

• DOI: 10.1016/j.jma.2017.08.002
• Publication Date: 2017-09-04T10:15:17Z
• Authors: Andrey Koltygin; Viacheslav Bazhenov; Uralboy Mahmadiyorov
• Keywords: Corundum; 6063 aluminium alloy

The mechanical properties of castings depend on the grain size. There is evidence that titanium and boron (Al–5Ti–1B master alloy) affect size magnesium alloys. Here, influence addition 0–1 wt. % Al–5Ti–1B alloy AZ91 was investigated. Melting performed in steel corundum crucibles. To study effect cooling rate size, cylindrical samples were cast fireclay molds. did not change phase composition alloy. This demonstrates contribute to refinement alloy, but rather led its coarsening for both Increasing holding time after from 15 110 minutes also lead significant coarsening. slightly improved addition.