Experimental investigation and correlation of elevated temperature mechanical behaviour of Zr-2.5Nb alloy
Source abstract
Abstract
In the current work, the high-temperature deformation behaviour of Zr-2.5Nb alloys used in pressurized heavy water reactors has been studied. Uniaxial tensile tests were carried out for both longitudinal and transverse specimen orientations in the temperature range of 25–800 °C at a nominal strain rate of 1 × 10–4 s−1. The transverse samples exhibited higher strength and lower ductility than the longitudinal ones at all temperatures. Percentage elongation of 406% and 386% was observed for the longitudinal and transverse samples, respectively, at 800 °C. The variation of tensile properties has been correlated over a wide range of temperatures by empirical equations, which will be beneficial for the computation of the elevated temperature deformation behaviour during the loss of coolant accident scenario in the reactors. TEM studies revealed the presence of Nb-enriched precipitates at the grain boundaries at elevated temperatures. The high value of strain rate sensitivity (m) obtained from the strain rate jump test in the temperature range of 600–800 °C confirmed the superplastic behaviour of this alloy in the region. The m-value and activation energy indicated that grain boundary sliding was the primary mechanism during superplastic deformation, accommodated by a combination of lattice and grain boundary diffusion.
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Research context
OpenAlex topics: Nuclear Materials and Properties · Microstructure and mechanical properties · Metallurgy and Material Forming
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References (42)
Show source-provided references
1. Guguloth K, Ghosh M, Swaminathan J, Mitra R (2020) Tensile creep and rupture behavior along with evolution of microstructure in a Zr-2.5Nb alloy. Mater Sci Eng A 791:139681. https://doi.org/10.1016/j.msea.2020.13968110.1016/j.msea.2020.139681 ↗
2. Christodoulou N, Turner PA, Tomé CN et al (2002) Analysis of steady-state thermal creep of Zr-2.5Nb pressure tube material. Metall Mater Trans A Phys Metall Mater Sci 33:1103–1115. https://doi.org/10.1007/s11661-002-0212-410.1007/s11661-002-0212-4 ↗
3. Li Y, Rogge R, Holt RA (2006) Development of local microstructure and crystallographic texture in extruded Zr-2.5Nb tubes. Mater Sci Eng A 437:10–20. https://doi.org/10.1016/j.msea.2006.04.04810.1016/j.msea.2006.04.048 ↗
4. Holt RA (2008) In-reactor deformation of cold-worked Zr-2.5Nb pressure tubes. J Nucl Mater 372:182–214. https://doi.org/10.1016/j.jnucmat.2007.02.01710.1016/j.jnucmat.2007.02.017 ↗
5. Li W, Holt RA, Daymond MR, Xu F (2011) Influence of prior dislocation structure on anisotropy of thermal creep of cold-worked Zr-2.5Nb tubes. J Nucl Mater 412:138–144. https://doi.org/10.1016/j.jnucmat.2011.02.04410.1016/j.jnucmat.2011.02.044 ↗
6. Hammad AM, Nasr MA (1992) Mechanical properties of the Zr-1% Nb alloy at elevated temperatures. J Nucl Mater 186:166–17610.1016/0022-3115(92)90331-E ↗
7. Cui C, Wang F, Li Y et al (2022) Dynamic recrystallization and deformation model of β-quenched Zr-4 alloy subjected to elevated temperature compression. Mater Sci Eng A 849:143472. https://doi.org/10.1016/j.msea.2022.14347210.1016/j.msea.2022.143472 ↗
8. Srivastava D, Dey GK, Banerjee S (1995) Evolution of microstructure during fabrication of Zr-2.5 Wt pct Nb alloy pressure tubes. Metall Mater Trans A 26:2707–2718. https://doi.org/10.1007/BF0266942710.1007/BF02669427 ↗
9. Singh RN, Kishore R, Singh AK et al (2001) Microstructural instability and superplasticity in a Zr-2.5 Wt Pct Nb pressure-tube alloy. Metall Mater Trans A Phys Metall Mater Sci 32:2827–2840. https://doi.org/10.1007/s11661-001-1033-610.1007/s11661-001-1033-6 ↗
10. Dutta S, Robi PS (2021) Analysis of tensile flow and work hardening behavior of Zr-2.5Nb alloy in the framework of Kocks — Mecking approach. J Mech Sci Technol 35:3369–3374. https://doi.org/10.1007/s12206-021-0710-110.1007/s12206-021-0710-1 ↗
11. Khandelwal HK, Singh RN, Bind AK et al (2015) Tensile properties and fracture toughness of Zr-2.5Nb alloy pressure tubes of IPHWR220. Nucl Eng Des 293:138–149. https://doi.org/10.1016/j.nucengdes.2015.07.04810.1016/j.nucengdes.2015.07.048 ↗
12. Nene SS, Sharma G, Singh RN, Kashyap BP (2014) Microstructural evolution in and flow properties of Zr-2.5Nb pressure tube material at elevated temperature. J Nucl Mater 449:62–68. https://doi.org/10.1016/j.jnucmat.2014.03.00210.1016/j.jnucmat.2014.03.002 ↗
13. Suman S, Khan MK, Pathak M et al (2016) Rupture behaviour of nuclear fuel cladding during loss-of-coolant accident. Nucl Eng Des 307:319–327. https://doi.org/10.1016/j.nucengdes.2016.07.02210.1016/j.nucengdes.2016.07.022 ↗
14. Singh RN, Ståhle P, Chakravartty JK, Shmakov AA (2009) Threshold stress intensity factor for delayed hydride cracking in Zr-2.5%Nb pressure tube alloy. Mater Sci Eng A 523:112–117. https://doi.org/10.1016/j.msea.2009.05.06610.1016/j.msea.2009.05.066 ↗
15. Fleck R, Price E, Cheadle B (1984) Pressure tube development for CANDU reactors. In: Zirconium in the nuclear industry. ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428–2959, pp 88–88–1810.1520/STP34464S ↗
16. Coleman CE, Cheadle BA, Cann CD, Theaker JR (1996) Development of pressure tubes with service life greater than 30 years. ASTM Spec Tech Publ 1295:884–898. https://doi.org/10.1520/stp16206s10.1520/stp16206s ↗
17. Shewfelt RSW, Lyall LW (1985) A high-temperature longitudinal strain rate equation for Zr-2.5 wt% Nb pressure tubes. J Nucl Mater 132:41–46. https://doi.org/10.1016/0022-3115(85)90391-510.1016/0022-3115(85)90391-5 ↗
18. Shewfelt RSW (1984) The anisotropic deformation of Zr-2.5 wt% Nb Candu pressure tubes between 20 and 700°C. Can Metall Q 23:441–445. https://doi.org/10.1179/cmq.1984.23.4.44110.1179/cmq.1984.23.4.441 ↗
19. Ahn SB, Kim DS, Kim YS, et al (2005) Irradiation and operating temperature effects on the tensile characteristics of CANDU pressure tube material. Key Eng Mater 297–300 I:421–427. https://doi.org/10.4028/0-87849-978-4.42110.4028/0-87849-978-4.421 ↗
20. Rodchenkov BS, Semenov AN (2005) High temperature mechanical behavior of Zr-2.5% Nb alloy. Nucl Eng Des 235:2009–2018. https://doi.org/10.1016/j.nucengdes.2005.05.03210.1016/j.nucengdes.2005.05.032 ↗
21. H.E. Rosinger, R.S.W. Shewfelt MGW (1980) WNRE Report
22. Singh RN, Mukherjee S, Kishore R, Kashyap BP (2005) Flow behaviour of a modified Zr-2.5wt%Nb pressure tube alloy. J Nucl Mater 345:146–161. https://doi.org/10.1016/j.jnucmat.2005.05.00810.1016/j.jnucmat.2005.05.008 ↗
23. Shukla SV, Chandrashekharayya C, Singh RN et al (1999) Effect of strain rate and test temperature on superplasticity of a Zr-2.5 wt% Nb alloy. J Nucl Mater 273:130–138. https://doi.org/10.1016/S0022-3115(99)00037-910.1016/S0022-3115(99)00037-9 ↗
24. Dureja AK, Sinha SK, Srivastava A et al (2011) Flow behaviour of autoclaved, 20% cold worked, Zr-2.5Nb alloy pressure tube material in the temperature range of room temperature to 800 °C. J Nucl Mater 412:22–29. https://doi.org/10.1016/j.jnucmat.2011.01.02310.1016/j.jnucmat.2011.01.023 ↗
25. Kapoor R, Chakravartty JK, Gupta CC, Wadekar SL (2005) Characterization of superplastic behaviour in the (α + β) phase field of Zr-2.5 wt.%Nb alloy. Mater Sci Eng A 392:191–202. https://doi.org/10.1016/j.msea.2004.09.02310.1016/j.msea.2004.09.023 ↗
26. Swift HW (1952) Plastic instability under plane stress. J Mech Phys Solids 1:1–18. https://doi.org/10.1016/0022-5096(52)90002-110.1016/0022-5096(52)90002-1 ↗
27. Voce E (1955) A practical strain hardening function. Metallurgia 51:219–226
28. Guguloth K, Mitra R, Chowdhury SG, Swaminathan J (2018) Mechanism of creep deformation with evolution of microstructure and texture. Mater Sci Eng A 721:286–302. https://doi.org/10.1016/j.msea.2018.02.03510.1016/j.msea.2018.02.035 ↗
29. JCPDF reference, code:00–018–0599.pdf
30. Wang XG, Li QS, Wu RR et al (2018) A Review on Superplastic Formation Behavior of Al Alloys. Adv Mater Sci Eng. https://doi.org/10.1155/2018/760614010.1155/2018/7606140 ↗
31. G.E.Dieter (1998) Mechanical Metallurgy
32. Sotoudeh K, Bate PS (2010) Diffusion creep and superplasticity in aluminium alloys. Acta Mater 58:1909–1920. https://doi.org/10.1016/j.actamat.2009.11.03410.1016/j.actamat.2009.11.034 ↗
33. Kiran Kumar M, Samajdar I, Venkatramani N et al (2003) Explaining absence of texture development in cold rolled two-phase Zr-2.5 wt% Nb alloy. Acta Mater 51:625–640. https://doi.org/10.1016/S1359-6454(02)00442-110.1016/S1359-6454(02)00442-1 ↗
34. Nouduru SK, Kumar MK, Kain V et al (2016) High temperature and high pressure oxidation behavior of Zr-2.5Nb pressure tube material - Effect of β phase composition and surface machining. J Nucl Mater 470:197–207. https://doi.org/10.1016/j.jnucmat.2015.12.03010.1016/j.jnucmat.2015.12.030 ↗
35. Gifkins RC (1977) The effect of grain size and stress upon grain-boundary sliding. Metall Trans A 8:1507–1516. https://doi.org/10.1007/BF0264485310.1007/BF02644853 ↗
36. Ashby MF, Verrall RA (1973) Diffusion-accommodated flow and superplasticity. Acta Metall 21:149–163. https://doi.org/10.1016/0001-6160(73)90057-610.1016/0001-6160(73)90057-6 ↗
37. Duan YL, Xu GF, Peng XY et al (2015) Effect of Sc and Zr additions on grain stability and superplasticity of the simple thermal-mechanical processed Al-Zn-Mg alloy sheet. Mater Sci Eng A 648:80–91. https://doi.org/10.1016/j.msea.2015.09.04910.1016/j.msea.2015.09.049 ↗
38. R.N. Singh, R. Kishore, T.K. Sinha, B.P. Kashyap, (1993) Superplastic behaviour of a Zr-2.5wt% Nb pressure tube alloy. Scr Metall Mater 28:937–94210.1016/0956-716X(93)90059-2 ↗
39. Kim JS, Kim JH, Lee YT, et al (1999) Microstructural analysis on boundary sliding and its accommodation mode during superplastic deformation of Ti – 6Al – 4V alloy. 263:272–28010.1016/S0921-5093(98)01157-5 ↗
40. Cao FR, Ding H, Li YL et al (2010) Superplasticity, dynamic grain growth and deformation mechanism in ultra-light two-phase magnesium-lithium alloys. Mater Sci Eng A 527:2335–2341. https://doi.org/10.1016/j.msea.2009.12.02910.1016/j.msea.2009.12.029 ↗
41. Tan JC, Tan MJ (2003) Superplasticity and grain boundary sliding characteristics in two stage deformation of Mg-3Al-1Zn alloy sheet. Mater Sci Eng A 339:81–89. https://doi.org/10.1016/S0921-5093(02)00097-710.1016/S0921-5093(02)00097-7 ↗
42. Brandes EA (1983) Smithells metals reference book, 6th edn. Butterworth Publishers, Stoneham