All Issue

2018 Vol.28, Issue 3 Preview Page
Effect of Heat Treatment on Microstructure and Fracture Behavior of STS304-Zr Alloys for Metal Waste Forms

금속고화체용 STS304-Zr 합금의 미세조직과 파괴거동에 미치는 열처리의 영향

Jongwoo Kim1
,
Seon Ah Jang2
,
Seung Youb Han2
,
Hwan Seo Park2
,
Junghoon Lee3
,
Sunghak Lee3
,
Yongjai Kwon1
,
Jung Gu Lee1
,
Sang Yong Shin1†
김 종우1
,
장 선아2
,
한 승엽2
,
박 환서2
,
이 정훈3
,
이 성학3
,
권 용재1
,
이 정구1
,
신 상용1†
1School of Materials Science and Engineering, University of Ulsan, Ulsan 44610, Korea
2Pyroprocess Technology Division Korea Atomic Energy Research Institute, Daejeon 34057, Korea
3Center for Advanced Aerospace Materials Pohang University of Science and Technology, Pohang 37673, Korea
1울산대학교 첨단소재공학부
2한국원자력연구원 파이로기술실증연구부
3포항공과대학교 항공재료연구센터
†Corresponding author : sshin@ulsan.ac.kr (S. Y. Shin, Univ. of Ulsan)
March 2018. pp. 174-181
PDF XML Citation
Abstract

Three kinds of STS304-Zr alloys were fabricated by varying the Zr content, and their microstructure and fracture properties were analyzed. Moreover, we performed heat treatment to improve their properties and studied their microstructure and fracture properties. The microstructure of the STS304-Zr alloys before and after the heat treatment process consisted of α-Fe and intermetallics: Zr(Cr, Ni, Fe)2 and Zr6Fe23. The volume fraction of the intermetallics increased with an increasing Zr content. The 11Zr specimen exhibited the lowest hardness and fine dimples and cleavage facets in a fractured surface. The 15Zr specimen had high hardness and fine cleavage facets. The 19Zr specimen had the highest hardness and large cleavage facets. After the heat treatment process, the intermetallics were spheroidized and their volume fraction increased. In addition, the specimens after the heat treatment process, the Laves phase (Zr(Cr, Ni, Fe) 2) decreased, the Zr6Fe23 phase increased and the Ni concentration in the intermetallics decreased. The hardness of all the specimens after the heat treatment process decreased because of the dislocations and residual stresses in α-Fe, and the fine lamellar shaped eutectic microstructures changed into large α-Fe and spheroidized intermetallics. The cleavage facet size increased because of the decomposition of the fine lamellarshaped eutectic microstructures and the increase in spheroidized intermetallics.

Keywords
metal waste forms
STS304-Zr alloys
heat treatment process
microstructure
fracture behavior
References
1
N. Das, G. Abraham, P. Sengupta and V. Ashok Arya, J. Nucl. Mater., 467; 489 (2015)
10.1016/j.jnucmat.2015.09.058
2
M-S. Yim and K. Linga Murty, JOM, 52; 26 (2000)
10.1007/s11837-000-0183-0
3
N. Tsoulfanidis and R.G. Cochran, Nucl. Technol., 93; 263 (1991)
10.13182/NT91-A34525
4
R.O. Abdel Rahman, R.Z. Rakhimov, N.R. Rakhimova and M.I. Ojovan, ASTM Stand. Pract., Cementitious Materials for Nuclear Waste Immobilization., C; 1174 (1991)
5
D.D. Keiser Jr, D.P. Abraham, W. Sinkler, J.W. Richardson Jr and S.M. McDeavitt, J. Nucl. Mater., 279; 234 (2000)
10.1016/S0022-3115(00)00002-7
6
S. M. McDeavitt, J. Y. Park and J. P. Ackerman, ANL/CMT/CP-80022
7
S.M. McDeavitt, D.P. Abraham, J.Y. Park and D.D. Keiser Jr, JOM, 49; 29 (1997)
10.1007/BF02914763
8
S.M. McDeavitt, D.P. Abraham and J.Y. Park, J. Nucl. Mater., 257; 21 (1998)
10.1016/S0022-3115(98)00433-4
9
J.P. Ackerman, T.R. Johnson, L.S. Chow, E.L. Carls, W.H. Hannum and J.J. Laidler, Prog. Nucl. Energy, 31; 141 (1997)
10.1016/0149-1970(96)00008-X
10
J.P. Ackerman, L.S.H. Chow, S.M. McDeavitt, C. Pereira and R.H. Woodman, JOM, 49; 26 (1997)
10.1007/BF02914762
11
M.A. Lewis, D.F. Fischer and C.D. Murphy, Proc. MRS, 333; 95 (1994)
12
C. Pereira, M.C. Hash, M.A. Lewis and M.K. Richmann, JOM, 49; 34 (1997)
10.1007/BF02914764
13
M.C. Hash, C. Pereira, M.A. Lewis, R.J. Blaskovitz and J.P. Ackerman, , Westerville, OH. American Ceramic Society. (1996)
14
C.C. Mcpheeters, R.D. Pierce and T.P. Mulcahey, Prog. Nucl. Energy, 31; 175 (1997)
10.1016/0149-1970(96)00010-8
15
M.F. Simpson and P. Sachdev, Nucl. Eng. Technol., 40; 175 (2008)
10.5516/NET.2008.40.3.175
16
J.J. Laidler, J.E. Battles, W.E. Miller, J.P. Ackerman and E.L. Carls, Prog. Nucl. Energy, 31; 131 (1997)
10.1016/0149-1970(96)00007-8
17
L. R. Bairi, S. Ningshen and U. Kamachi Mudali, Corros. Sci., 52; 2291 (2010)
10.1016/j.corsci.2010.03.018
18
D.P. Abraham, S.M. McDeavitt and J. Park, Metall. Mater. Trans., A Phys. Metall. Mater. Sci., 27; 2151 (1996)
10.1007/BF02651870
19
S.M. McDeavitt, G.W. Billings and J.E. Indacochea, J. Mater. Sci., 37; 3765 (2002)
10.1023/A:1016581829824
20
D.P. Abraham, J.W. Richardson Jr and S.M. McDeavitt, Mater., Mater. Sci. Eng. A Struct., 239-240; 658 (1997)
21
J. P. Ackerman, C. Pereira, S. M. McDeavitt and L. Simpson, ANL/CMT/CP-954836
22
D.D. Keiser Jr, D.P. Abraham and J.W. Richardson Jr, J. Nucl. Mater., 277; 333 (2000)
10.1016/S0022-3115(99)00158-0
23
R. P. Elliot and W. Rostoker, Trans. ASTM, 50; 617 (1958)
24
X.Y. Meng and D.O. Northwood, J. Less Common Met., 125; 33 (1986)
10.1016/0022-5088(86)90078-0
25
P. Nash and C.S. Jayanath, Bull. Alloy Phase Diagr., 5; 144 (1984)
10.1007/BF02868950
26
O. Canet, M. Latroche and F. Bouree-Vigneron, J. Alloys Compd., 210; 129 (1994)
10.1016/0925-8388(94)90127-9
27
D. P. Abraham J. W. Richardson Jr, Scr. Mater., 37; 239 (1997)
Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 28
  • No :3
  • Pages :174-181
  • Received Date : 2018-01-12
  • Revised Date : 2018-02-14
  • Accepted Date : 2018-02-14
  • DOI :https://doi.org/10.3740/MRSK.2018.28.3.174
Journal Informaiton Korean Journal of Materials Research Korean Journal of Materials Research
Online Submission
  • scopus
  • NRF
  • KOFST
  • crossref crossmark
  • crossref cited-by
  • crosscheck
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close