摘要
为了解决Pt-25Ag合金加工困难和性能不够稳定问题,采用Pt-10Pd-20Ag的成分设计,通过真空感应熔炼和喷铸成形成功制备出成本较低的铂银合金,并深入研究了静液挤压后的试样进行多次小变形量旋锻工艺对Pt-10Pd-20Ag合金组织性能的影响,即在旋锻加工过程中穿插进行1 010℃退火+保温2 h并随炉冷却的热处理,并对加工后的试样进行显微组织分析。结果表明,采用该旋锻工艺能够明显细化试样的显微组织,可使试样包套从8 mm旋锻至2 mm无断裂,加工性能明显改善。
The alloy composition of Pt-10Pd-20Ag has been designed to prepare Pt-Pd-Ag alloy due to the dif- ficulty and unstability of Pt-25Ag alloy in this paper. The low-cost Pt-10Pd-20Ag alloy was produced by the vacuum induction melting and jet casting process. The microstructure and mechanical properties of the alloy with multi-small deformation rotary forging process were studied by utilizing scanning electron microscopy （SEM）. The annealing at 1 010℃ for 2 h and cooling in the furnace was carried out between the deformation rotary forging. The results show that the rotary swaging process can significantly refine the grain sizes, and the diameter of tested sample was reduced from 8 mm down to 2 mm without fracture. The microstructure and properties of alloy can be improved by rotary swaging technology.
出处
《辽宁科技大学学报》
CAS
2017年第1期38-42,共5页
Journal of University of Science and Technology Liaoning
