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Vol.47, No.12, 852 ~ 860, 2009
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| Title |
| Manufacturing Process Effect on Strength and Corrosion Properties of Zr Alloys for Fuel Guide Tube |
| 김현길 Hyun Gil Kim , 김일현 Il Hyun Kim , 최병권 Byung Kwan Choi , 박상윤 Sang Yoon Park , 박정용 Jeong Yong Park , 정용환 Yong Hwan Jeong |
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| Abstract |
| The manufacturing process of zirconium alloys is an import factor to increase their strength and corrosion resistance. In order to find an improved manufacturing process of zirconium alloys in both Zr-1Nb-1Sn-0.1Fe (Alloy-A) and Zr-1.5Nb-0.4Sn-0.2Fe-0.1Cr (HANA-4) for fuel guide tubes, sheet samples were prepared by applying two- and three-step processes that were controlled by an annealing and reduction condition. The mechanical strength and corrosion resistance of both alloys were increased by applying the two-step process rather than the three-step process. From a matrix analysis using TEM, the property improvement is related to the decrease of the precipitate mean diameter with an application of the two-step process. In a comparison of the strength and corrosion properties between Alloy-A and HANA-4, the performance of HANA-4 was feasible for application to fuel guide tubes. |
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| Key Words |
| Zr alloy, fuel guide tube, strength, corrosion, manufacturing process |
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