Microstructures and textures of a Zr702 sheet subjected to slow cooling (air cooling (AC) and furnace cooling (FC)) from a near β-transus temperature (980°C) were characterised by electron channelling contrast imaging and electron backscatter diffraction techniques. Results show that textural intensities of both the AC and the FC are markedly higher than that of the initial specimen and the FC specimen owns the strongest texture. After both the heat treatments, the initial bimodal basal textural features are retained with the recrystallisation textural component (0°, 30°, 30°) becoming dominant but the deformation textural component (0°, 30°, 0/60°) largely weakened. The textural intensification is attributed to strong variant selection during the β → α phase transformation and slow cooling-induced sufficient growth of residual prior α grains.
YauTL.Corrosion of Zirconium and its alloys. Shreir's Corros. 2010;3:2094–2134. doi: 10.1016/B978-044452787-5.00101-3
3.
ChenL-Y, ShenP, ZhangL, Corrosion behavior of non-equilibrium Zr-Sn-Nb-Fe-Cu-O alloys in high-temperature 0.01 M LiOH aqueous solution and degradation of the surface oxide films. Corros Sci. 2018;136:221–230. doi: 10.1016/j.corsci.2018.03.012
4.
MehjabeenA, SongT, XuW, Zirconium alloys for Orthopaedic and Dental applications. Adv Eng Mater. 2018;20:1800207. doi: 10.1002/adem.201800207
5.
MurtyKL, CharitI.Texture development and anisotropic deformation of zircaloys. Prog Nucl Energy. 2006;48:325–359. doi: 10.1016/j.pnucene.2005.09.011
6.
LuanB, GaoS, ChaiL, Compression deformation behavior of Zr–1Sn–0.3Nb alloy with different initial orientations at 650°C. Mater Des. 2013;52:1065–1070. doi: 10.1016/j.matdes.2013.06.069
7.
TenckhoffE.Review of deformation mechanisms texture and mechanical anisotropy in zirconium and zirconium base alloys. J ASTM Int. 2005;2:25–50. doi: 10.1520/JAI12945
8.
HoltRA.The beta to alpha phase transformation in zircaloy-4. J Nucl Mater. 1970;35:322–334. doi: 10.1016/0022-3115(70)90216-3
9.
ZhangM, ZhangF, YangZ, Effect of cooling process on the formation of duplex microstructure in Zr–2.3Nb alloy. J Alloys Comp. 2015;651:316–321. doi: 10.1016/j.jallcom.2015.08.105
10.
JeongYH, RheemKS, ChoiCS, Effect of beta heat treatment on microstructure and nodular corrosion of zircaloy-4. J Nucl Sci Technol. 1993;30:154–163. doi: 10.1080/18811248.1993.9734463
11.
ChaiL, LuanB, ChenJ, Effect of cooling rate on β→α transformation during quenching of a Zr-0.85Sn-0.4Nb-0.4Fe-0.1Cr-0.05Cu alloy. Sci China Technol Sci. 2012;55:2960–2964. doi: 10.1007/s11431-012-4956-9
12.
DahlbackMLM, HallstadiusL, BarberisP, The effect of beta-quenching in final dimension on the irradiation growth of tubes and channels. J ASTM Int. 2005;2:276–304.
13.
GrytsynaV, StukalovA, ChernyayevaT, Destruction of crystallographic texture in zirconium alloy tubes. J ASTM Int. 2005;2:305–329. doi: 10.1520/JAI12339
14.
BurgersWG.On the process of transition of the cubic-body-centered modification into the hexagonal-close-packed modification of zirconium. Physica. 1934;1:561–586. doi: 10.1016/S0031-8914(34)80244-3
15.
RomeroJ, PreussM, Quinta da FonsecaJ.Texture memory and variant selection during phase transformation of a zirconium alloy. Acta Mater. 2009;57:5501–5511. doi: 10.1016/j.actamat.2009.07.046
16.
DaymondMR, HoltRA, CaiS, Texture inheritance and variant selection through an hcp–bcc–hcp phase transformation. Acta Mater. 2010;58:4053–4066. doi: 10.1016/j.actamat.2010.03.012
17.
SattariM, HoltRA, DaymondMR.Variant selection and transformation texture in zirconium alloy Excel. J Nucl Mater. 2014;453:120–123. doi: 10.1016/j.jnucmat.2014.06.045
18.
WenkHR, LonardelliI, WilliamsD.Texture changes in the hcp→bcc→hcp transformation of zirconium studied in situ by neutron diffraction. Acta Mater. 2004;52:1899–1907. doi: 10.1016/j.actamat.2003.12.029
19.
GeyN, HumbertM, GautierE, Study of the β→α variant selection for a zircaloy-4 rod heated to the β-transus in presence or not of an axial tensile stress. J Nucl Mater. 2004;328:137–145. doi: 10.1016/j.jnucmat.2004.03.003
20.
QiuRS, LuanBF, ChaiLJ, Precise determination of the α → α + β phase transformation temperature of Zr-1.0Sn-0.3Nb-0.3Fe alloy. Sci China Technol Sci. 2013;56:60–65. doi: 10.1007/s11431-012-5063-7
21.
ChaiL, LuanB, ChenB, Concurrent inheritance of microstructure and texture after slow β→α cooling of commercially pure Zr. Sci China Technol Sci. 2016;59:1771–1776. doi: 10.1007/s11431-016-0306-7
22.
ChaiL, LuanB, XiaoD, Microstructural and textural evolution of commercially pure Zr sheet rolled at room and liquid nitrogen temperatures. Mater Des. 2015;85:296–308. doi: 10.1016/j.matdes.2015.06.088
23.
ZhuKY, BacroixB, ChauveauT, Texture evolution and associated nucleation and growth mechanisms during annealing of a Zr alloy. Metall Mater Trans A. 2009;40:2423–2434. doi: 10.1007/s11661-009-9909-y
24.
CrepinJ, BretheauT, CaldemaisonD, Microstructural study of beta treated grade 702 zirconium: scanning electron microscopy and transmission electron microscopy, complementarity of two observational scales. J Mater Sci. 1997;32:4841–4846. doi: 10.1023/A:1018603619366
25.
ChauvyC, BarberisP, MontheilletF.Microstructure transformation during warm working of β-treated lamellar Zircaloy-4 within the upper α-range. Mater Sci Eng A. 2006;431:59–67. doi: 10.1016/j.msea.2006.05.031
26.
ChaiL, ChenB, ZhouZ, A special twin relationship or a common Burgers misorientation between α plates after β quenching in Zr alloy?Mater Charact. 2015;104:61–65. doi: 10.1016/j.matchar.2015.04.008
27.
WangYN, HuangJC.Texture analysis in hexagonal materials. Mater Chem Phys. 2003;81:11–26. doi: 10.1016/S0254-0584(03)00168-8
28.
MassihAR, AnderssonT, WittP, Effect of quenching rate on the β-to-α phase transformation structure in zirconium alloy. J Nucl Mater. 2003;322:138–151. doi: 10.1016/S0022-3115(03)00323-4
29.
StanfordN, BatePS.Crystallographic variant selection in Ti–6Al–4 V. Acta Mater. 2004;52:5215–5224. doi: 10.1016/j.actamat.2004.07.034
DewobrotoN, BozzoloN, BarberisP, On the mechanisms governing the texture and microstructure evolution during static recrystallization and grain growth of low alloyed zirconium sheets (Zr702). Int J Mater Res. 2006;97:826–833.
