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- Title
Effect of Boron on the Grain Refinement and Mechanical Properties of as-Cast Mg Alloy AM50.
- Authors
Zhang, Shuo; Song, Jiangfeng; Liao, Hongxin; Liu, Yanglu; Zhang, Gen; Ma, Shida; Tang, Aitao; Atrens, Andrej; Pan, Fusheng
- Abstract
The effect of B addition on the microstructure and mechanical properties of AM50 was investigated, and the mechanism of grain refinement was clarified. Optical microscopy, X-ray diffraction, scanning electron microscopy, and electron probe microanalysis were used to characterize the microstructure evolution. The grain size of as-cast AM50 decreased from 550 μm to 100 μm with the B content increasing from 0 to 0.15 wt.%. AlB2 particles in the Al-3B master alloy transformed to Mg-B, and acted as the grain refiner. The addition of B to as cast AM50 alloy results in improved mechanical properties of AM50 + xB alloys. For instance, the YTS (yield tensile strength), UTS (ultimate tensile strength), and elongation of as cast AM50 + 0.15 wt.% B alloy was 94 MPa, 215 MPa, and 12.3%.
- Subjects
MAGNESIUM alloys; BORON; GRAIN refinement; MECHANICAL properties of metals; METAL castings; METAL microstructure
- Publication
Materials (1996-1944), 2019, Vol 12, Issue 7, p1100
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma12071100