Microstructure and mechanical properties of Ni3Al fabricated by thermal explosion and hot extrusion
Source abstract
Abstract
The dense Ni(3)Al with different boron and chromium addition was fabricated by the thermal explosion and hot extrusion (TE/HE) technology. Microstructure examination showed that Ni(3)Al contained fine grain structure (200 nm to 10 mu m). Analysis of X-ray spectra as well as transmission electron microscopy studies revealed that three phases present in all alloys: gamma-Ni, Ni(3)Al and dispersoids of Al(2)O(3). With the addition of B, beta-NiAl phase and twinned Ni(3)Al formed, but in the B and Cr doped alloy, Cr rich phase and a spot of Cr(7)Ni(3) particles with stacking faults inside were observed. In addition, dislocations with high density existed in all alloys. The mechanical test showed that the B and Cr addition resulted in significant improvement in mechanical properties, and TE/HE synthesized Ni(3)Al alloy owned more excellent mechanical properties, compared with the one synthesized by combustion. (C) 2009 Elsevier Ltd. All rights reserved.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · Energetic Materials and Combustion · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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