Influence of solidification cooling rate on the microstructure and properties of as-cast Mg–4.5Y–3Zn alloy
Source abstract
Abstract
The microstructure and mechanical properties of as-cast Mg-Y-Zn magnesium alloys with different cooling rate during solidification were studied. The results show that different cooling rates were obtained by means of air cooling, wind cooling, water mist cooling and water quenching, which can change the dendrite morphology, volume fraction and morphology of the compound phases of the as-cast Mg-4.5Y-3Zn alloy, thereby adjusting the strength and toughness. Within the solidification cooling-rate range of 2.3–38.4 °C/s, the primary dendrite arm spacing (PDAS) decreases progressively with increasing cooling rate, reaching a minimum of 181.4 μm at the maximum rate of 38.4 °C/s achieved by water quenching. The types of compound phases remain unchanged, while their proportions and morphologies are altered. Increasing the solidification rate suppressed the formation of the 18R-LPSO phase (Mg 12 YZn), reducing its volume fraction from 13.5% to 9.3%. Meanwhile, the morphology of the W phase(Mg 3 Y 2 Zn 3 ) changed from a coral-like structure to a lath-like form. The ultimate compressive strength (UCS) and yield strength (YS) increased with rising cooling rate, while the plasticity decreases. The alloy exhibits excellent comprehensive properties with UCS of 355.6 MPa, YS of 150.8 MPa and a fracture strain of 12.0%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Metallurgical and Alloy Processes · Aluminum Alloy Microstructure Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. The 18R and 14H long-period stacking ordered structures in mg–y–zn alloys10.1016/j.actamat.2010.01.022 ↗
2. Thermodynamics and kinetics of phase transformation in rare earth–magnesium alloys: a critical review10.1016/j.jmst.2020.01.022 ↗
3. A critical review of mg–zn–y series alloys containing I, W, and LPSO phases10.1002/adem.201600393 ↗
4. Influence of Y/Zn mole ratio on the phase composition and mechanical properties of Mg-Y-Zn alloys [J]. F
5. Comparison of castability, mechanical, and corrosion properties of Mg-Zn-Y-Zr alloys containing LPSO and W phases10.1016/S1003-6326(21)65577-2 ↗
6. Effects of Mn on the microstructure and mechanical properties of long period stacking ordered Mg95Zn2.5Y2.5 alloy10.1016/j.matlet.2013.06.112 ↗
7. Effect of microalloying with boron on the microstructure and mechanical properties of mg–zn–y–mn alloy10.1016/j.msea.2016.05.095 ↗
8. Effects of heat treatment on the morphology of long-period stacking ordered phase, the corresponding damping capacities and mechanical properties of mg–zn–y alloys10.1016/j.jallcom.2015.03.208 ↗
9. Effect of cooling rate on the grain refinement of Mg–3Nd alloys by aluminum10.1007/s40962-018-0224-5 ↗
10. Introducing lamellar LPSO phase to regulate room and high-temperature mechanical properties of Mg-Gd-Y-Zn-Zr alloys by altering cooling rate10.1016/j.jmrt.2023.04.252 ↗
11. The combined effects of the cooling rate and alloying element on the mechanical behavior of mg-mn-zn alloying system
12. The role of melt cooling rate on the interface between 18R and Mg matrix in Mg97Zn1Y2 alloys10.1016/j.jma.2021.11.010 ↗
13. Effect of cooling rate on grain refining behavior of Mg-4Y-3Nd-1.5Al alloy10.1088/2053-1591/ab5232 ↗
14. Effects of solidification cooling rate on the corrosion resistance of mg–zn–ca alloy10.1016/j.pnsc.2014.08.002 ↗
15. Effect of cooling rate on the microstructure and solidification parameters of Mg–3Al–3Nd alloy10.1007/s10973-018-7446-x ↗
16. The relationship between (Mg, Zn)3RE phase and 14H-LPSO phase in mg–gd–y–zn–zr alloys solidified at different cooling rates10.1016/j.jallcom.2010.12.136 ↗
17. Effect of cooling rates on As-Cast microstructures of Mg-9Al-xSi (X=1, 3) alloys10.1016/S1003-6326(10)60504-3 ↗
18. Effects of cooling rate on quasicrystal microstructures of Mg-Zn-Y alloys10.4028/www.scientific.net/AMR.160-162.901 ↗
19. Effect of cooling rate on microstructure and mechanical properties of Mg-9Gd-4Y-1Zn-1Al alloy10.1080/02670836.2023.2173895 ↗
20. Effects of yttrium and zinc addition on the microstructure and mechanical properties of mg–y–zn alloys10.1007/s10853-010-4223-z ↗
21. As-Cast microstructures and mechanical properties of Mg–4Zn–xY–1Ca (X=1.0, 1.5, 2.0, 3.0) magnesium alloys10.1016/S1003-6326(15)63657-3 ↗
22. Comparison of castability, mechanical, and corrosion properties of Mg−Zn−Y−Zr alloys containing LPSO and W phases10.1016/S1003-6326(21)65577-2 ↗
23. Phase equilibria and transformations in ternary Mg-Rich mg–y–zn alloys10.1016/j.actamat.2012.05.035 ↗
24. Formation behavior of 14H long period stacking ordered structure in mg–y–zn cast alloys with different α-Mg fractions10.1016/j.jmst.2016.01.005 ↗
25. Mechanical properties and yield asymmetry of Mg-Y-Zn alloys: competitive behavior of second phases10.1016/j.matchar.2020.110301 ↗
26. Microstructural characteristics of AZ31 alloys rolled at room and cryogenic temperatures and their variation during annealing10.1016/j.jma.2020.03.003 ↗
27. Effects of Ce/La misch metal content on microstructure evolution and mechanical properties of Mg-Zn-Y alloy10.1016/j.msea.2017.05.070 ↗
28. Hall-Petch equation in a hypoeutectic Al-Si cast alloy: grain size vs. secondary dendrite arm spacing10.1016/j.proeng.2017.10.731 ↗
29. Grain size hardening in Mg and Mg-Zn solid solutions10.1007/s11661-010-0599-2 ↗
30. Effects of rare-earth elements Gd and Y on the solid solution strengthening of Mg alloys10.1016/j.jallcom.2009.02.131 ↗
31. Strengthening mechanisms in solution treated Mg-yNd-zZn-xZr alloy10.1007/s10853-013-7436-0 ↗
32. Achieving strength and ductility synergy via a nanoscale superlattice precipitate in a cast Mg-Y-Zn-Er alloy10.1016/j.ijplas.2023.103558 ↗