| Title |
Effect of Al and Zr Contents on Mechanical Properties of Ni-Al-Bronze |
| Authors |
안지혁(Jee Hyuk Ahn); 김동욱(Dong Wook Kim); 김민수(Min Soo Kim); 황종현(Jong-hyun Hwang); 한승전(Seung Zeon Han) |
| DOI |
https://doi.org/10.3365/KJMM.2017.55.8.537 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Ni-Al-bronze; cast alloy; grain refinement; mechanical properties; microstructure |
| Abstract |
To study the effect of Al and Zr contents on the microstructural changes and tensile properties of Ni-Al-Bronze alloy, seven specimens were cast with different Al and Zr contents. The microstructure observation revealed that all specimens were composed of β` and κ phases in a α matrix. With increasing Al and Zr contents, the tensile strength of the Ni-Al-Bronze increased, due to an increase in the β` and κ phase fraction and grain refinement, but the elongation behavior of the Ni-Al-Bronze declined. Furthermore, the excessive addition of Zr caused a reduction in tensile strength and ductility. A successful combination of tensile strength and ductility, 688 MPa-23% was achieved by the controlled addition of Zr to Ni-Al-Bronze.(Received November 10, 2016; Accepted March 13, 2017) |