Comparison of in situ nanocrystals, Sr and nanocrystals + Sr manipulating microstructures and mechanical properties of eutectic Al–Si13.0–Cu5.0–(Ni2.0)–Mg0.6 alloy
Source abstract
Abstract
Trace in situ nanocrystals crystallized from metallic glasses as innovative microstructure manipulation agents were proposed to manipulate the multilevel microstructure configuration of eutectic Al–Si13.0–Cu5.0–Mg0.6 alloy. And the manipulation effect by nanocrystals for different times was compared with Sr, nanocrystals + Sr and Ni alloying. The calculations indicated that NiTi nanocrystals had an ideal mismatch with α-Al and silicon; thus, nanocrystals can stimulate their nucleation and hinder their growth. Sr and Ni alloying were found to only refine the silicon phases, but nanocrystals refined both α-Al and silicon phases. Moreover, the inhibition of nanocrystals and Sr was verified. After the manipulation by nanocrystals for 20 min, the optimum microstructure configuration and mechanical properties were realized. The results showed that the size of α-Al was reduced by 86.7%, and the size and aspect ratio of eutectic silicon were decreased by 27.7% and 50.0% compared with that of the unmanipulated alloy. Primary silicon was distributed more evenly and reduced in number. In addition, the size of Al2Cu and Mg2Si was decreased by 57.7% and 90.6%. Accordingly, a prominent microstructure configuration comprised of refined α-Al, silicon phases and precipitations was established successfully via nanocrystals. Moreover, the ultimate tensile strength (UTS) and fracture strain (FS) were increased by 17.8% and 73.3% compared with that of the unmanipulated alloy at ambient temperature, and the yield strength (σ0.2) and UTS were increased by 21.5% and 14.4% at 250 °C. The specific strengthening mechanisms were revealed, as well. Therefore, in situ nanocrystals have great application potential and developmental value.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Aluminum Alloys Composites Properties · Microstructure and mechanical properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (55)
Show source-provided references
1. Fabrication and characterization of in situ synthesized SiC/Al composites by combustion synthesis and hot press consolidation method10.1155/2017/9314740 ↗
2. Wetting of graphite by molten Cu-xSn-yCr ternary alloys at 1373 K10.1016/j.carbon.2019.12.097 ↗
3. Investigation on performance and implementation of Tesla turbine in engine waste heat recovery10.1016/j.enconman.2018.10.071 ↗
4. Probing the local atomic structure of Sr-modified Al–Si alloys10.1016/j.actamat.2013.10.060 ↗
5. Influence of Ni in high Fe containing recyclable Al–Si cast alloys10.1016/j.matdes.2019.108017 ↗
6. Hardness and corrosion behaviour of anodised Al–Si produced by rheocasting10.1016/j.matdes.2019.107764 ↗
7. Enhanced nucleation and refinement of eutectic Si by high number-density nano-particles in Al–10Si–0.5Sb alloys10.1016/j.matdes.2017.01.009 ↗
8. Effect of Al–Ti–C master alloy addition on microstructures and mechanical properties of cast eutectic Al–Si–Fe–Cu alloy10.1016/j.matdes.2016.11.036 ↗
9. On the growth mechanism of the primary silicon particle in a hypereutectic Al-20 wt%Si alloy using synchrotron X-ray tomography10.1016/j.matdes.2017.09.062 ↗
10. Effect of Si, Cu and processing parameters on Al–Si–Cu HPDC castings10.1016/j.jmatprotec.2017.06.043 ↗
11. Improved mechanical properties of near-eutectic Al–Si piston alloy through ultrasonic melt treatment10.1016/j.msea.2016.05.087 ↗
12. High cycle fatigue properties of near eutectic Al–Si piston alloy
13. Nucleation and growth mechanisms of nano-scaled Si precipitates in Al-7Si supersaturated solid solution10.1016/j.matdes.2017.02.082 ↗
14. A novel heat-resistant Al–Si–Cu–Ni–Mg base material synergistically strengthened by Ni-rich intermetallics and nano-AlNP microskeletons10.1016/j.jmst.2018.09.051 ↗
15. The effect and mechanism of alloying elements on Al/SiC interfacial reaction in Al melt10.1016/j.apsusc.2019.144265 ↗
16. Effect of low-temperature pre-deformation on precipitation behavior and microstructure of a Zr–Sn–Nb–Fe–Cu–O alloy during fabrication10.1080/00223131.2015.1059776 ↗
17. Simultaneously improved strength and toughness of in situ bi-phased TiB2-Ti(C,N)-Ni cermets by Mo addition10.1016/j.jallcom.2019.153068 ↗
18. Effect of ε-Al3Ni phase on mechanical properties of Al–Si–Cu–Mg–Ni alloys at elevated temperature10.1016/j.msea.2019.138794 ↗
19. Processing, multiscale microstructure refinement and mechanical property enhancement of hypoeutectic Al–Si alloys via in situ bimodal-sized TiB2 particles10.1016/j.msea.2020.139081 ↗
20. Effect of Ta addition on the microstructures and mechanical properties of in situ bi-phase (TiB2-TiCxNy)/(Ni-Ta) cermets10.1016/j.ceramint.2018.11.118 ↗
21. Effect of annealing treatment on the microstructure and mechanical properties of a duplex Zr-2.5 Nb alloy10.1016/j.msea.2017.08.107 ↗
22. A mechanism for the poisoning effect of silicon on the grain refinement of Al–Si alloys10.1016/j.actamat.2006.09.046 ↗
23. Effect of rare earth Yb on microstructure and corrosion resistance of ADC12 aluminum alloy10.1016/j.intermet.2019.106487 ↗
24. Investigation on influence of sodium- or Sr-modification on corrosion-resistance of Al–11.7%Si alloy10.1007/s10853-006-0545-2 ↗
25. Crystallization kinetics of an Au-based metallic glass upon ultrafast heating and cooling10.1016/j.scriptamat.2017.02.001 ↗
26. The influence of CaO addition on grain refinement of cast magnesium alloys10.1016/j.scriptamat.2015.12.015 ↗
27. Effect of d-Al3CuNi phase and thermal exposure on microstructure and mechanical properties of Al–Si–Cu–Ni alloys10.1016/j.jallcom.2019.03.412 ↗
28. Cluster formation at the Si/liquid interface in Sr and Na modified Al–Si alloys10.1016/j.scriptamat.2016.02.018 ↗
29. Heat-treatment induced defect formation in a-Al matrix in Sr-modified eutectic Al–Si alloy10.1016/j.jallcom.2017.09.324 ↗
30. Twin-controlled growth of eutectic Si in unmodified and Sr-modified Al–12.7%Si alloys investigated by SEM/EBSD10.1016/j.actamat.2015.06.041 ↗
31. Microstructural evolution and high temperature flow behaviors of a homogenized Sr-modified Al–Si–Mg alloy10.1016/j.jallcom.2017.12.278 ↗
32. Modification of eutectic Si and the microstructure in an Al-7Si alloy with barium addition10.1016/j.msea.2018.05.010 ↗
33. On the growth mechanism of the primary silicon particle in a hypereutectic Al-20wt%Si alloy using synchrotron X-ray tomography10.1016/j.matdes.2017.09.062 ↗
34. Probing the local atomic structure of Sr-modified Al–Si alloys10.1016/j.actamat.2013.10.060 ↗
35. Twin-controlled growth of eutectic Si in unmodified and Sr-modified Al–12.7%Si alloys investigated by SEM/EBSD10.1016/j.actamat.2015.06.041 ↗
36. Growth mechanisms of silicon in Al-Si alloys10.1016/0022-0248(85)90308-2 ↗
37. Effect of Al–Ti–C master alloy addition on microstructures and mechanical properties of cast eutectic Al–Si–Fe–Cu alloy10.1016/j.matdes.2016.11.036 ↗
38. Microstructure evolution and enhanced mechanical properties of eutectic Al–Si die cast alloy by combined alloying Mg and La10.1016/j.matdes.2015.10.078 ↗
39. Microstructure and mechanical properties of Al–Si alloys processed by strain induced melt activation
40. In-situ TiB2 particulate reinforced near eutectic Al–Si alloy composites10.1016/S1359-835X(01)00124-5 ↗
41. Two quite different primary Mn-rich phases in Al–Si–Cu–Mn heat-resistant alloy and its effect to mechanical properties10.1016/j.msea.2018.05.100 ↗
42. A novel modifier on eutectic Si and mechanical properties of Al-Si alloy10.1016/j.matlet.2018.12.045 ↗
43. Dynamic precipitation of Mg2Si induced by temperature and strain during hot extrusion and its impact on microstructure and mechanical properties of near eutectic Al–Si–Mg–V alloy10.1016/j.msea.2014.07.023 ↗
44. Effect of Si content on microstructure and mechanical properties of Al–Si–Mg alloys10.1016/j.matdes.2013.07.067 ↗
45. Microstructure and mechanical properties of hypoeutectic Al–Si composite reinforced with TiCN nanoparticles10.1016/j.matdes.2016.01.144 ↗
46. Microstructure and mechanical properties of Al–Si eutectic alloy modified with Al–3P master alloy10.1016/j.jmatprotec.2017.12.008 ↗
47. Microstructure, mechanical properties and corrosion behavior of Al–Si–Cu–Zn–X (X=Bi, Sb, Sr) die cast alloy10.1016/S1003-6326(16)64085-2 ↗
48. Influence of additives on the microstructure and tensile properties of near-eutectic Al–10.8%Si cast alloy10.1016/j.matdes.2009.05.042 ↗
49. Enhanced mechanical properties of a chip-based Al–Si–Cu–Fe alloy with an in-situ emulsion decomposition recycled by solid-state processing10.1016/j.rinp.2018.12.036 ↗
50. Effect of hot extrusion on mechanical properties and microstructure of near eutectic Al–12.0%Si–0.2%Mg alloy10.1016/j.msea.2010.07.068 ↗
51. Dynamic precipitation of Mg2Si induced by temperature and strain during hot extrusion and its impact on microstructure and mechanical properties of near eutectic Al–Si–Mg–V alloy10.1016/j.msea.2014.07.023 ↗
52. Effect of ε-Al3Ni phase on mechanical properties of Al–Si–Cu–Mg–Ni alloys at elevated temperature10.1016/j.msea.2019.138794 ↗
53. Effect of Q-Al5Cu2Mg8Si6 phase on mechanical properties of Al–Si–Cu–Mg alloy at high temperature10.1016/j.msea.2017.03.087 ↗
54. Tensile properties of an Al–11mass%Si alloy at high temperatures processed by rotary-die equal-channel angular pressing10.1016/j.msea.2005.07.064 ↗
55. Elevated temperature mechanical properties and fracture behaviors of the bond zone of aluminum matrix composites (Al-12Si/ABOw) with Al-12Si alloys10.1016/j.msea.2017.05.116 ↗