Effects of Phosphorus on Microstructure and Mechanical Properties in NiCr Alloys
| Autor: | Xin Tong Lian, Wen Ru Sun, Shou Ren Guo, Dan Dan Zheng, Xin Xin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Thesaurus (information retrieval) Materials science Mechanical Engineering Phosphorus Metallurgy chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences chemistry Mechanics of Materials 0103 physical sciences General Materials Science Nichrome 0210 nano-technology |
| Zdroj: | Materials Science Forum. 913:141-149 |
| ISSN: | 1662-9752 |
| Popis: | Microstructure and mechanical properties of Ni-Cr alloys with various contents of Phosphorus (P) have been investigated. It is found that the increase of phosphorus refined dendritic structures in as-cast alloys and decreased micro-segregation of Chromium (Cr) element. α-Cr which precipitated during hot-rolling process was obviously inhibited by phosphorus because of its prior occupancy on grain boundaries and decreasing precipitation driving force of α-Cr. Tensile and impact properties were examined on samples under different heat treatments. Though the yield strength of as-rolled alloys was increased by precipitation of α-Cr, the elongation and impact energies were reduced. It is worthy to note that impact energies of samples solutioned at 950°C increased with the increasing phosphorus. The results indicated that dislocations are markedly effected by phosphorus which is probably the reason for improving impact energies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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