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Effect of Scrap Impurities on Microstructure and Mechanical Properties of Zr Alloys
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  • Journal title : Journal of Korea Foundry Society
  • Volume 36, Issue 3,  2016, pp.81-87
  • Publisher : The Korean Foundrymens Society
  • DOI : 10.7777/jkfs.2016.36.3.81
 Title & Authors
Effect of Scrap Impurities on Microstructure and Mechanical Properties of Zr Alloys
Jeong, Gu Beom; Kim, In Won; Song, Jae Sook; Shin, Pyung Woo; Hong, Sun Ig;
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 Abstract
In this study, the effect of scrap ratio on the mechanical properties of Zr alloys was studied. Oxygen content in the ingot cake increased rapidly with increasing fraction of scrap, which can be attributed to the surface oxide of scrap including small pieces of turning, chips, etc. Iron content did not increase much with the increasing addition of scrap, suggesting scrap materials was well reserved in the iron-free container. As-cast structure of Zr alloy with the scrap:sponge ratio displayed plate/or needle phase and no appreciable change of the cast structure was observed with change of scrap fraction. The strength increases with increasing fraction of scrap, which can be attributed to the increase of oxygen content. The ductility decreased slightly with increase of scrap fraction. Dislocation-oxygen interaction is known to increase the strength at the expense of ductility. Ingot cake with intentionally added exhibited the drastic decrease of the formability, even exhibited the brittle fracture behavior during rolling. The oxidation resistance, however, increased with the increase of scrap fraction because of high oxygen content, which may prevent more penetration and diffusion of oxygen into matrix.
 Keywords
Zr alloy;Strength;Ductility;Oxygen;Recycling;
 Language
Korean
 Cited by
 References
1.
R. W. Cahn, P. Hassen and E. J. Kramer, Materials Science and Technology, "A Comprehensive Treatment, Structure and Properties of Non-Ferrous alloys", 8 (1996) 436.

2.
Hong SI and Lee KW, J. Nucl. Mater., "Stress-induced reorientation of hydrides and mechanical properties of Zircaloy-4 cladding tubes", 340 (2005) 203-208. crossref(new window)

3.
Park KT, Kim SH, Hong SI, Choi MS, Cho NC, Ryu WJ and Lee JH, J. of Korean Inst. of Resources Recycling, "Overview of Zirconium Production and Recycling Technology", 21 (2012) 18-30. crossref(new window)

4.
Nuclear Zirconium Alloy Market, Ux Consulting, "Microstructure and Deformability of Cast Zr-Nb-Fe-O alloy with High Iron and Oxygen Content" (2010).

5.
Lee SY, Kim KT and Hong SI, J. Nucl. Mater., "Circumferential creep properties of stress-relieved Zircaloy-4 and Zr-Nb-Sn-Fe cladding tubes", 392 (2009) 63-69. crossref(new window)

6.
Jeong GB, Shin PW and Hong SI, Advanced Materials Research, "Effect of scrap:sponge ratio on mechanical and corrosion properties of Zr-1Nb-0.7Sn-0.1Fe alloy", 977 (2014) 94-98. crossref(new window)

7.
N. S. Gamba, I. A. carbajal-Ramos, M. A. Ulla, B. T. Pierini and F. C. Gennari, J. Alloys and Compounds, "Zirconium alloys produced by recycling zircaloy tuning", 578 (2013) 553-558. crossref(new window)

8.
Chang KI and Hong SI, J. Nucl. Mater., "Effect of sulphur on the strengthening of a Zr-Nb alloy", 373 (2008) 16-21. crossref(new window)

9.
Hong SI and Kim HJ, Materials Science and Engineering., "Temperature dependence of elongation in Zircaloy-4", 86 (1987) L1-L4. crossref(new window)

10.
Hong SI, Ryu WS and Rim CS, J. Nucl. Mater., "Thermally activated deformation of Zircaloy-4", 120 (1984) 1-5. crossref(new window)

11.
Hong SI, Materials Science and Engineering., "Influence of dynamic strain aging on the dislocation substructure in a uniaxial tension test", 79 (1986) 1-7. crossref(new window)

12.
Hong SI, Lee KW and Kim KT, J. Nucl. Mater., "Effect of the circumferential hydrides on the deformation and fracture of Zircaloy cladding tubes", 303 (2002), 169-176. crossref(new window)

13.
Jeong GB, Kim IW and Hong SI, J. Nucl. Mater., "Influence of microstructure modification on the circumferential creep of Zr-Nb-Sn-Fe cladding tubes", 468 (2016) 171-177. crossref(new window)

14.
Kim IW and Hong SI, Met. Mater. Int., "Effect of Heat Treatment on the Creep Properties of Zr-1Nb-0.12O Nuclear Cladding Tubes", 22 (2016) 216-221. crossref(new window)

15.
Hong SI, Song JS and Kim HS, Scripta materialia, "Thermomechanical processing and properties of Cu-9Fe-1.2Co microcomposite wires", 35 (2001) 1295-1300.

16.
Kim BH, Seo JH and Park KC, J. Korea Foundry Society, "The Effect of Al and Sn Additions on Corrosion Behavior of Permanent Mold Casting Magnesium alloy", 35 (2015) 36-43. crossref(new window)

17.
Kim KJ, Lim SG, Ju HK and Pak SJ, J. Korea Foundry Society, "Effect of Austenitizing Ratio on the Delta ferrite Volume Fraction and Corrosion Resistance of Shell Mold Cast SSC13 Elbow Fitting", 35 (2015) 109-113. crossref(new window)