Enhancing the Mechanical Properties of Si Particle Reinforced ZA22 Composite by Ti–B Modification
作者： D. Yousefi , R. Taghiabadi , M. H. Shaeri , P. Abedinzadeh
DOI: 10.1007/S40962-020-00447-W
关键词: Microstructure 、 Volume fraction 、 Phase (matter) 、 Structural material 、 Precipitation (chemistry) 、 Composite material 、 Ultimate tensile strength 、 Composite number 、 Materials science 、 Particle
摘要: In situ precipitation of primary Si (SiP) particles within the microstructure Si-containing Zn–22Al alloys, also known as ZA22/SiP composites, can improve their hardness and mechanical strength, provided that size, morphology, distribution SiP are optimized. this study, Ti–B treatment was employed to modify properties ZA22–xSi (x = 4 8 wt%) composite. According results, eliminated α-Al dendrites, reduced volume fraction remaining phase microstructure, size particles, improved matrix. Moreover, is from 25.2 ± 9.5 30.1 ± 4.4 μm in non-modified samples containing 4 8 wt% 14.7 ± 6.3 19.6 ± 5.3 μm modified by Ti–B, respectively. addition substantially refined homogenized other second phases porosities. The analyses revealed that, at a given concentration, alloys relatively less than ones. tensile strength fracture strain ZA22–4Si ZA22–8Si composites increased about 15 59, 60 82%,
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