Affiliation:
1. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
2. Northwest Institute for Non-Ferrous Metal Research, Shanxi Key Laboratory of Biomedical Metal Materials, Xi’an 710016, China
3. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
Abstract
The effect of Ni on microstructure, elemental partition behavior,
phase solvus temperature, lattice misfit between
and
phases, and mechanical properties of the Co-8Ti-11V-xNi alloys was investigated. The result shows that the lattice misfit in the alloys decreases from 0.74% to 0.61% as the Ni content increases from 0 to 10%, and the average sizes of the cuboidal
phase were measured to be 312.10 nm, 112.86 nm, and 141.84 nm for the Co-8Ti-11V, Co-8Ti-11V-5Ni, and Co-8Ti-11V-10Ni, respectively. Ti, V, and Ni exhibit a slight tendency to partition into the
phase, while Co shows a slight tendency to partition into the
phase. The solvus temperatures of the
phase were measured to be 1167°C, 1114°C, and 1108°C for the Co-8Ti-11V, Co-8Ti-11V-5Ni, and Co-8Ti-11V-10Ni alloys, respectively, by using differential scanning calorimetry (DSC). Moreover, the yield strength and ultimate strength of the Co-8Ti-11V, Co-8Ti-11V-5Ni, and Co-8Ti-11V-10Ni alloys were investigated, and the yield strength and ultimate strength of the 10Ni alloy were highest, at 219 MPa and 240 MPa. After compression at 1000°C, the dislocations cannot effectively shear the
phase in the 0Ni and 10Ni alloys, resulting in a relatively high compressive strength of the 0Ni and 10Ni alloys. However, the
phase of the 5Ni alloy is no longer visible, and its strength is the lowest.
Funder
Science and Technology Plan Project of Weiyang District in Xi’an City
Subject
Instrumentation,Atomic and Molecular Physics, and Optics
Cited by
6 articles.
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