Improving the Mechanical Properties of Cu-15Ni-8Sn Alloys by Addition of Titanium
- Resource Type
- article
- Authors
- Chao Zhao; Weiwen Zhang; Zhi Wang; Daoxi Li; Zongqiang Luo; Chao Yang; Datong Zhang
- Source
- Materials, Vol 10, Iss 9, p 1038 (2017)
- Subject
- Cu-15Ni-8Sn alloy
titanium
mechanical properties
grain refinement
discontinuous precipitation
Technology
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Engineering (General). Civil engineering (General)
TA1-2040
Microscopy
QH201-278.5
Descriptive and experimental mechanics
QC120-168.85
- Language
- English
- ISSN
- 1996-1944
The effect of Ti addition on the microstructure and mechanical properties of Cu-15Ni-8Sn alloys was investigated. Optical microscopy (OM), scanning electronic microscopy (SEM), and transmission electron microscopy (TEM) were used to determine grain size and distribution of the second phases in the alloys. The results indicate that the tensile properties of Cu-15Ni-8Sn alloys are improved significantly with Ti addition. Tensile elongation increased from 2.7% for the alloy without Ti to 17.9% for the alloy with 0.3% Ti, while tensile strength was maintained and even increased from 935 MPa to 1024 MPa. The improvement of the mechanical properties of Cu-15Ni-8Sn alloys by the addition of Ti is attributed to the grain refinement and suppression of discontinuous precipitation during heat treatment.