| 니알브론즈의 기계적 특성에 미치는 알루미늄 및 지르코늄 함량의 영향 |
| 안지혁1, 김동욱2, 김민수1, 황종현2, 한승전1 |
1한국기계연구원 부설 재료연구소 소재실용화연구실
2현대중공업 생산기술연구소 |
| Effect of Al and Zr Contents on Mechanical Properties of Ni-Al-Bronze |
| Jee Hyuk Ahn1, Dong Wook Kim2, Min Soo Kim1, Jong-Hyun Hwang2, Seung Zeon Han1 |
1Commercialization Research Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea
2Industrial Technology Institute, Corporate Technology Institute, Hyundai Heavy Industries Co., Ltd, Ulsan 682-792, Republic of Korea |
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Received: 10 November 2016; Accepted: 13 March 2017. Published online: 1 August 2017. |
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| ABSTRACT |
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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. |
| Keywords:
Ni-Al-bronze, cast alloy, grain refinement, mechanical properties, microstructure |
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