Hot tearing characteristics of Mg–2Ca–xZn alloys
Source abstract
Abstract
Influence of Zn content (0, 0.5, 1.5, 4 and 6 wt%) on the hot tearing characteristics of Mg–2 wt% Ca alloy was investigated. The constrained rod casting (CRC) apparatus equipped with a load cell and data acquisition system was used. The initiation of hot tearing was monitored during solidification. The effect of mould temperatures (250 and 450 °C) on the hot tearing was also investigated. The formed tears were evaluated using X-ray tomography and the tear volumes were measured. Results show that hot tearing susceptibility (HTS) of Mg–2Ca–xZn (x = 0, 0.5, 1.5, 4 and 6 wt%) alloys increases with increase in Zn content up to 1.5 wt%, then decreases with further increase in the Zn content to 6 wt%. Higher initial mould temperature (450 °C) improves the hot tearing resistance. The observations on the microstructures and the fracture surfaces suggest that the hot tear initiated at the grain boundaries and propagated along them through the thin liquid film rupture and liquid metal embrittlement of solid bridges. Tear healing by low melting point eutectic liquid is also observed in some of the alloys.
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Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Aluminum Alloys Composites Properties · Aluminum Alloy Microstructure Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. D’Elia F, Ravindran C, Sediako D (2015) Interplay among solidification, microstructure, residual strain and hot tearing in B206 aluminum alloy. Mater Sci Eng A 624:169–18010.1016/j.msea.2014.11.057 ↗
2. Easton MA, Gibson MA, Zhu SM, Abbott TB (2014) An a priori hot-tearing indicator applied to die-cast magnesium-rare earth alloys. Metall Mater Trans A 45:3586–359510.1007/s11661-014-2272-7 ↗
3. Cao G, Zhang C, Cao H, Chang YA, Kou S (2010) Hot-tearing susceptibility of ternary mg-al-sr alloy castings. Metall Mater Trans A 41:706–71610.1007/s11661-009-0134-5 ↗
4. Eskin DG, Suyitno Katgerman L (2004) Mechanical properties in the semi-solid state and hot tearing of aluminium alloys. Prog Mater Sci 49:629–71110.1016/S0079-6425(03)00037-9 ↗
5. Sweet L, Easton MA, Taylor JA et al (2013) Hot tear susceptibility of Al-Mg-Si-Fe alloys with varying iron contents. Metall Mater Trans A 44:5396–540710.1007/s11661-012-1562-1 ↗
6. Cao G, Kou S (2006) Hot cracking of binary Mg–Al alloy castings. Mater Sci Eng A 417:230–23810.1016/j.msea.2005.10.050 ↗
7. Zhen Z, Hort N, Huang YD, Petri N, Utke O, Kainer KU (2009) Quantitative determination on hot tearing in Mg-Al binary alloys. Mater Sci Forum 618–619:533–54010.4028/www.scientific.net/MSF.618-619.533 ↗
8. Zhou L, Huang YD, Mao PL, Kainer KU, Liu Z, Hort N (2011) Influence of composition on hot tearing in binary Mg–Zn alloys. Int J Cast Met Res 24:170–17610.1179/136404611X13001912813942 ↗
9. Wang Z, Huang YD, Srinivasan A, Liu Z, Beckmann F, Kainer KU, Hort N (2013) Hot tearing susceptibility of binary Mg–Y alloy castings. Mater Design 47:90–10010.1016/j.matdes.2012.12.044 ↗
10. Srinivasan A, Wang Z, Huang Y, Beckmann F, Kainer K, Hort N (2013) Hot tearing characteristics of binary Mg-Gd alloy castings. Metall Mater Trans A 44:2285–229810.1007/s11661-012-1593-7 ↗
11. Gunde P, Schiffl A, Uggowitzer PJ (2010) Influence of yttrium additions on the hot tearing susceptibility of magnesium–zinc alloys. Mater Sci Eng A 527:7074–707910.1016/j.msea.2010.07.086 ↗
12. Wang Z, Song J, Huang YD, Srinivasan A, Liu Z, Kainer K, Hort N (2015) An investigation on hot tearing of Mg-4.5Zn-(0.5Zr) alloys with Y additions. Metall Mater Trans A 46:2108–211810.1007/s11661-015-2755-1 ↗
13. Cao G, Kou S (2006) Hot tearing of ternary Mg-Al-Ca alloy castings. Metall Mater Trans A 37:3647–366310.1007/s11661-006-1059-x ↗
14. Cao G, Haygood I, Kou S (2010) Onset of hot tearing in ternary Mg-Al-Sr alloy castings. Metall Mater Trans A 41:2139–215010.1007/s11661-010-0248-9 ↗
15. Zhou L, Huang YD, Mao PL, Kainer KU, Liu Z, Hort N (2011) Investigations on hot tearing of Mg-Zn-(Al) alloys. In: Sillekens WH, Agnew SR, Neelameggham NR, Mathaudhu SN (eds) Magnesium technology. Wiley, Hoboken, pp 125–130
16. Wang Y, Wang Q, Wu G, Zhu Y, Ding W (2002) Hot-tearing susceptibility of Mg–9Al–xZn alloy. Mater Lett 57:929–93410.1016/S0167-577X(02)00898-4 ↗
17. Bakhsheshi-Rad HR, Idris MH, Abdul-Kadir MR (2013) Synthesis and in vitro degradation evaluation of the nano-HA/MgF2 and DCPD/MgF2 composite coating on biodegradable Mg–Ca–Zn alloy. Surf Coat Tech 222:79–8910.1016/j.surfcoat.2013.02.007 ↗
18. Zhang B, Hou Y, Wang X, Wang Y, Geng L (2011) Mechanical properties, degradation performance and cytotoxicity of Mg–Zn–Ca biomedical alloys with different compositions. Mater Sci Eng C 31:1667–167310.1016/j.msec.2011.07.015 ↗
19. Zhang B, Wang Y, Geng L (2011) Mechanical properties, degradation performance and cytotoxicity of Mg–Zn–Ca biomedical alloys with different compositions. In: Pignatello R (ed) Biomaterials—physics and chemistry. InTech, Rijeka, pp 183–204
20. Gao X, Zhu SM, Muddle BC, Nie JF (2005) Precipitation-hardened Mg–Ca–Zn alloys with superior creep resistance. Scripta Mater 53:1321–132610.1016/j.scriptamat.2005.08.035 ↗
21. Tong LB, Zheng MY, Hu XS, Wu K, Xu SW, Kamado S, Kojima Y (2010) Influence of ECAP routes on microstructure and mechanical properties of Mg–Zn–Ca alloy. Mater Sci Eng A 527:4250–425610.1016/j.msea.2010.03.062 ↗
22. Somekawa H, Mukai T (2007) High strength and fracture toughness balance on the extruded Mg–Ca–Zn alloy. Mater Sci Eng A 459:366–37010.1016/j.msea.2007.01.021 ↗
23. Levi G, Avraham S, Zilberov A, Bamberger M (2006) Solidification, solution treatment and age hardening of a Mg–1.6 wt% Ca–3.2 wt% Zn alloy. Acta Mater 54:523–53010.1016/j.actamat.2005.09.023 ↗
24. Nie JF, Muddle BC (1997) Precipitation hardening of Mg-Ca(-Zn) alloys. Scripta Mater 37:1475–148110.1016/S1359-6462(97)00294-7 ↗
25. Tong LB, Zheng MY, Xu SW et al (2011) Effect of Mn addition on microstructure, texture and mechanical properties of Mg–Zn–Ca alloy. Mater Sci Eng A 528:3741–374710.1016/j.msea.2011.01.037 ↗
26. Gao JH, Guan SK, Ren ZW, Sun YF, Zhu SJ, Wang B (2011) Homogeneous corrosion of high pressure torsion treated Mg–Zn–Ca alloy in simulated body fluid. Mater Lett 65:691–69310.1016/j.matlet.2010.11.015 ↗
27. Song J, Wang Z, Huang YD, Srinivasan A, Beckmann F, Kainer KU, Hort N (2015) Hot tearing susceptibility of Mg-Ca binary alloys. Metall Mater Trans A 46:6003–601210.1007/s11661-015-3165-0 ↗
28. Powell BR, Luo AA, Tiwari BL, Rezhets V (2002) The die castability of calcium-containing magnesium alloys: thin-wall computer case, Magnesium Technology 2002. TMS, Warrendale, pp 123–129
29. Song J, Wang Z, Huang YD, Srinivasan A, Beckmann F, Kainer KU, Hort N (2015) Effect of Zn addition on hot tearing behaviour of Mg–0.5Ca–xZn alloys. Mater Design 87:157–17010.1016/j.matdes.2015.08.026 ↗
30. Zhen Z, Hort N, Utke O, Huang YD, Petri N, Kainer KU (2009) Investigations on hot tearing of Mg-Al binary alloys by using a new quantitative method. In: Nyberg EA, Agnew SR, Neelameggham NR, Pekguleryuz MO (eds) Magnesium technology. Wiley, Hoboken, pp 105–110
31. D’Elia F, Ravindran C, Sediako D, Kainer KU, Hort N (2014) Hot tearing mechanisms of B206 aluminum–copper alloy. Mater Design 64:44–5510.1016/j.matdes.2014.07.024 ↗
32. Eskin DG, Katgerman L (2007) A quest for a new hot tearing criterion. Metall Mater Trans A 38:1511–151910.1007/s11661-007-9169-7 ↗
33. Clyne TW, Davies GJ (1979) Comparison between experimental data and theoretical predictions relating to dependence of solidification cracking on composition. Solidification and casting of metals. Metals Society, London, pp 275–278
34. Wang Z, Huang Y, Srinivasan A, Liu Z, Beckmann F, Kainer K, Hort N (2014) Experimental and numerical analysis of hot tearing susceptibility for Mg–Y alloys. J Mater Sci 49:353–362. doi: 10.1007/s10853-013-7712-z10.1007/s10853-013-7712-z ↗
35. Eskin DG, Suyitno Mooney JF, Katgerman L (2004) Contraction of aluminum alloys during and after solidification. Metall Mater Trans A 35:1325–133510.1007/s11661-004-0307-1 ↗
36. Suyitno Eskin DG, Savran VI, Katgerman L (2004) Effects of alloy composition and casting speed on structure formation and hot tearing during direct-chill casting of Al-Cu alloys. Metall Mater Trans A 35:3551–356110.1007/s11661-004-0192-7 ↗
37. Eskin DG, Savran VI, Katgerman L (2005) Effects of melt temperature and casting speed on the structure and defect formation during direct-chill casting of an Al-Cu alloy. Metall Matrt Trans A 36:1965–197610.1007/s11661-005-0059-6 ↗
38. Suyitno Eskin DG, Katgerman L (2006) Structure observations related to hot tearing of Al-Cu billets produced by direct-chill casting. Mater Sci Eng A 420:1–710.1016/j.msea.2005.12.037 ↗
39. Huang YD, Wang Z, Srinivasan A, Kainer KU, Hort N (2012) Metallurgical characterization of hot tearing curves recorded during solidification of magnesium alloys. Acta Phys Pol A 122:497–50010.12693/APhysPolA.122.497 ↗
40. Huang H, Fu P, Wang Y, Peng L, Jiang H (2014) Effect of pouring and mold temperatures on hot tearing susceptibility of AZ91D and Mg–3Nd–0.2Zn–Zr Mg alloys. Trans Nonferr Met Soc 24:922–92910.1016/S1003-6326(14)63144-7 ↗
41. Pellini WS (1952) Strain theory of hot tearing. Foundry 80:125–199