As-cast in-situ nanoparticle reinforced CuSn10Zn2Fe1.5Co0.5 (wt-%) alloy was selected as base metal (BM) and filler for welding. Butt joints were obtained by tungsten inert gas (TIG) welding. Microstructure of weld metal was characterised. Nanoparticles with an average diameter of about 5 nm are uniformly dispersed in the primary copper matrix in size of micro or nano scales for weld metal. A large number of nano grains with size of about 20 nm can be found in the weld metal as well. Mechanical properties of weld metal were comparable to those of heat-treated BM. Strengthening and toughening strategies for the weld metal were discussed through fabricating in-situ nanoparticles and nano grains in the weld metal.
ÜnlüBS, AtikE, MericC.Evaluation of effect of alloy elements in copper based CuSn10 and CuZn30 bearings on tribological and mechanical properties. J Alloy Compd. 2010; 489(1):262–268.
2.
TurhanH.Adhesive wear resistance of Cu-Sn-Zn-Pb bronze with additions of Fe, Mn and P. Mater Lett. 2005; 59(12):1463–1469.
3.
WangZD, WangXW, WangQS, Fabrication of a nanocomposite from in situiron nanoparticle reinforced copper alloy. Nanotechnol. 2009; 20(7):075605.
4.
PanSW, ZhouXL, ChenKX, In-situ nanoparticles: a new strengthening method for metallic structural material. Appl Sci. 2018; 8(12):2479–2499.
5.
ChenKX, KorzhavyiPA, DemangeG, Morphological instability of iron-rich precipitates in Cu-Fe-Co alloys. Acta Metall. 2019; 163:55–67.
6.
ChenKX, ChenXH, DingD, Formation mechanism of in-situ nanostructured grain in cast Cu-10Sn-2Zn-1.5Fe-0.5Co (wt. %) alloy. Mater Des. 2016; 94:338–344.
7.
YangCL, ZhaoQL, ZhangZJ, Nanoparticle additions promote outstanding fracture toughness and fatigue strength in a cast Al-Cu alloy. Mater Des. 2020; 186:108221.
8.
ChenXH, WangZD, DingD, Strengthening and toughening strategies for tin bronze alloy through fabricating in-situ nanostructured grains. Mater Des. 2015; 66:60–66.
9.
ShenJ, LiuK, LiY, Effects of fluxes on distribution of SiC particles and microstructures and mechanical properties of nanoparticles strengthening A-TIG (NSA-TIG) welded magnesium alloy joints. Sci Technol Weld Join. 2013; 18(5):404–413.
10.
JiaoZB, LuanJH, GuoW, Effects of welding and post-weld heat treatments on nanoscale precipitation and mechanical properties of an ultra-high strength steel hardened by NiAl and Cu nanoparticles. Acta Metall. 2016; 120:216–227.
11.
HsuPW, ChenRS, KaoFH, Martensite nucleation site and grain refinement in duplex titanium alloy weldment by active flux with nanoparticle addition. Sci Technol Weld Join. 2011; 16(6):514–521.
12.
FattahiM, MohammadyM, SajjadiN, Effect of TiC nanoparticles on the microstructure and mechanical properties of gas tungsten arc welded aluminum joints. J Mater Process Tech. 2015; 217:21–29.
13.
RamkumarKR, NatarajanS.Investigations on microstructure and mechanical properties of TiO2 nanoparticles addition in Al 3003 alloy joints by gas tungsten arc welding. Mater Sci Eng A. 2018; 727:51–60.
14.
XieX, ShenJ, ChengL, Effects of nano-particles strengthening activating flux on the microstructures and mechanical properties of TIG welded AZ31 magnesium alloy joints. Mater Des. 2015; 81:31–38.
15.
KianezhadM, Honarbakhsh RaoufA.Effect of nano-Al2O3 particles and friction stir processing on 5083 TIG welding properties. J Mater Process Tech. 2019; 263:356–365.
16.
TangH, ChenXH, LuoX, Heterogeneous nucleation effect of in situ nanoparticles on the metal–matrix microstructure. Mater Lett. 2014; 137(15):455–459.
17.
WangT, ChenXH, ShiGD, Formation and capturing of nanoparticles in Cu-1wt. %Fe alloy melt during directional solidification process. J Iron Steel Res Int. 2017; 24(4):411–415.
18.
WangYM, ChenMG, ZhouFH, High tensile ductility in a nanostructured metal. Nat. 2002; 419(6910):912–915.
19.
NesE, RyumN, HunderiO.On the Zener drag. Acta Mater. 1985; 33(1):11–22.
20.
HallEO.The deformation and ageing of mild steel: III discussion of results. Proc Phys Soc Sect. 1951; 64(9):747–753.
21.
PetchNJ.The cleavage strength of polycristals. J Iron Steel Inst. 1953; 174:25–28.
22.
MeyersMA, MishraA, BensonDJ.Mechanical properties of nanocrystalline materials. Prog Mater Sci. 2006; 51:427–556.
23.
KochCC, MorrisDG, LuK, Ductility of nanostructured materials. Mater Res Soc Bull. 1999; 24(2):54–58.
24.
KochCC.Ductility in nanostructured and ultra fine-grained materials: recent evidence for optimism. Nanocryst Mater. 2003; 18:9–20.
25.
AsgariS, El-DanafE, KalidindiSR, Strain hardening regimes and microstructural evolution during large strain compression of low stacking fault energy fcc alloys that form deformation twins. Metall Mater Trans A. 1997; 28(9):1781–1795.
26.
AndradeU, MeyersMA, VecchioKS, Dynamic recrystallization in high-strain, high-strain-rate plastic deformation of copper. Acta Metall Mater. 1994; 42:3183–3195.
27.
YoungdahlCJ, WeertmanJR, HugoRC, Deformation behavior in nanocrystalline copper. Scripta Mater. 2001; 44(8):1475–1478.
