The effect of Cr additions and oxidation on densification, microstructure, phase constituents and mechanical properties of TiAlCr alloys produced by SPS
作者： Ntebogeng Mogale , Wallace Matizamhuka , Ronald Machaka , Mxolisi Shongwe , Yoko Yamabe-Mitarai
DOI: 10.1016/J.MATPR.2020.03.478
关键词:
摘要: Abstract Ternary Ti-47.5Al-(1–3)Cr (at. %) and reference quaternary Ti-48Al-2Cr-2Nb titanium aluminide alloys were processed from elemental powders utilizing mechanical milling, alloying spark plasma sintering. The effect of Cr additions oxidation on the densification behavior, microstructure, phase constituents properties sintered investigated. results point out that presence O play a significant role process i.e., compaction rates sintering temperatures alloys. microstructure studied based historical experimental theoretical data. Furthermore, compression fracture morphologies at found to be determined by combination response densification, microstructural evolutions effects as opposed composition only. High coupled with high level impaired ternary alloys, resulting in 9% decrease peak stress higher testing temperatures. At these temperatures, alloy showed good compared
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