Grain boundary migration in different casting processes directly affects the grain size of the ingot, which affects the mechanical properties of the alloy. In this study, Cu–Cr–Zr–Ti rods are manufactured using upward continuous casting and casting-extrusion processes followed by drawing. It is found that the strength of the upward continuous casting rods is 621 MPa, greater than that of the casting-extrusion rods 571 MPa, which is a result of different microstructure evolution during solution treatment. Calculations of the driving force and resistance of grain boundary migration were performed to explain the observations.
ZhangSJ, LiRG, KangHJ, A high strength and high electrical conductivity Cu-Cr-Zr alloy fabricated by cryorolling and intermediate aging treatment. Mater Sci Eng A.2017;680(5):108–114.
2.
LiangNN, LiuJZ, LinSC, A multiscale architectured CuCrZr alloy with high strength, electrical conductivity and thermal stability. J Alloys Compd.2018;735:1389–1394.
3.
KheifetsAE, KhomskayaIV, KorshunovLG, Effect of high strain-rate deformation and aging temperature on the evolution of structure, Microhardness, and Wear resistance of Low-Alloyed Cu–Cr–Zr alloy. Phys Met Metallogr.2018;119(4):402–411.
4.
FuHD, XuS, LiW, Effect of rolling and aging processes on microstructure and properties of Cu-Cr-Zr alloy. Mater Sci Eng A.2017;700:107–115.
5.
XiaCD, ZhangW, KangZY, High strength and high electrical conductivity Cu–Cr system alloys manufactured by hot rolling–quenching process and thermomechanical treatments. Mater Sci Eng A.2012;538:295–301.
6.
ShenDP, ZhuYJ, YangX, Investigation on the microstructure and properties of Cu-Cr alloy prepared by in-situ synthesis method. Vacuum.2018;149:207–213.
7.
Wongsa-NgamJ, WenHM, LangdonTG.Microstructural evolution in a Cu–Zr alloy processed by a combination of ECAP and HPT. Mater Sci Eng A.2013;579(9):126–135.
8.
PengLJ, MiXJ, XiongBQ, Microstructure of phases in a Cu–Zr alloy. Rare Metal.2015;34(10):706–709.
9.
TianW, BiLM, MaFC, Effect of Zr on as-cast microstructure and properties of Cu-Cr alloy. Vacuum.2018;149:238–247.
10.
PurcekG, YanarH, DemirtasM, Optimization of strength, ductility and electrical conductivity of Cu–Cr–Zr alloy by combining multi-route ECAP and aging. Mater Sci Eng A.2016;649(1):114–122.
11.
YangYC, ChenJC, HongZJ, Rare Metal Mat Eng.2011;40(2):290–293.
12.
YuanJH, GongLK, ZhangWQ, J Mater Sci Technol.2019;8(2):1964–1970.
13.
BoiovicD, TasicM, MarkovicS, Effect of the sample sizes and the sampling conditions on the results of chemical analysis of castings of Cu–Sn and Cu–Sn–Pb alloys. Met Sci Heat Treat.1998;40(10):427–428.
14.
KimYY, KimHS.Prediction of grain structure of thin bronze slab produced by horizontal continuous casting. Met Mater Int. 2019;25:465–472.
15.
LuDP, WangJ, ZengWJ, Study on high-strength and high-conductivity Cu–Fe–P alloys. Mater Sci Eng A.2006;421(1–2):254–259.
16.
WuSJ, WangJF, ChenHM, Magnesium Addition in Copper-Chromium Alloys: The Refinement of Aging Precipitates and improvement on mechanical Properties. Materialwiss Werksttechnik. 2019. doi: 10.1002/mawe.201800059
17.
YuanDW, WangJF, ChenHM, Mechanical properties and microstructural evolution of a Cu-Cr-Ag alloy during thermomechanical treatment. Mater Sci Tech-lond. 2018;34:1–8.
18.
FengH, JiangHC, YanDS, Microstructure and mechanical properties of a CuCrZr welding joint after continuous extrusion. J Mater Sci Technol.2015;31(2):210–216.
19.
FengH, JiangHC, YanDS, Effect of continuous extrusion on the microstructure and mechanical properties of a CuCrZr alloy. Mater Sci Eng A. 2013;582(10):219–224.
20.
YuanDW, YangB, ChenJS, Upward Continuous Casting in the Manufacture of Cu-Cr-Ag Alloys: Potential for Enhancing Strength Whilst Maintaining Ductility. Metall Mater Trans A.2017;48:6083–6090.
21.
ChenJS, WangJF, XiaoXP, Contribution of Zr to strength and grain refinement in CuCrZr alloy. Mater Sci Eng A. 2019;756:464–473.
22.
CaoYF, LiZY, ZhangXY, Dynamic recrystallization behavior of upward continuous casting Cu-0.19Cr-0.1Ag alloy. Mater Res Express. 2019. doi: 10.1088/2053-1591/aafd6e
23.
LuoZY, LuoFX, XieWB, A study on annealing-induced softening in cold drawn Cu–Cr–Sn alloy. Materialwiss Werkst.2018;49:1325–1334.
24.
WangH, GongLK, LiaoJF, Retaining meta-stable fcc-Cr phase by restraining nucleation of equilibrium bcc-Cr phase in CuCrZrTi alloys during ageing. J Alloys Compd.2018;749:140–145.
25.
PengLJ, XieHF, HuangGJ, The phase transformation and strengthening of a Cu-0.71 wt% Cr alloy. J Alloys Compd.2017;708:1096–1102.
26.
ZhangLM, HuangXH, SongXL.Fundamentals of Materials Science. Wuhan University of Technology Press. 2004: 516–520.
27.
HumphreysFJ, HatherlyM.Recrystallization and Related Annealing Phenomena. Amsterdam Boston Heidelberg. 2004: 219–220.
28.
MurrLE.Interfacial Phenomena in Metals and Alloys. Addison Wesley, Reading, MA.1975: 87–164.
29.
RingerSP, LiWB, EasterlingKE.On the interaction and pinning of grain boundaries by cubic shaped precipitate particles. Acta Mater. 1989;37:831–841.
30.
AguilarC, MartinezVP, PalaciosJM, A thermodynamic approach to energy storage on mechanical alloying of the Cu–Cr system. Scripta Mater.2007;57(3):213–216.
31.
SchneiderCA, RasbandWS, EliciriK.NIH image to ImageJ: 25 years of image analysis. Nat Methods.2012;9(7):671–675.
