Abstract
A model is proposed that predicts the critical grain boundary displacement rate needed to sustain continuous solidification crack growth in the mushy zone of a weld. A second model is proposed that relates this displacement rate to the strain rate across the mushy zone. Both models are used to examine and compare the weldability of three Al-Cu(-Mg) alloys: 2219, 2014, and 2024. The sensitivity of solidification cracking to grain size is demonstrated and the poor weldability of Alloys 2014 and 2024 is linked to the formation of Fe and Mn containing constituents.
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References
Prokhorov NN (1956) The problem of the strength of metals while solidifying during welding. Svarochnoe Proizvodstvo 6:5–11.
Chihoski RA (1972) The character of stress field around a weld pool moving on aluminum sheet. Welding Journal 51:9 s–18 s.
Feng Z (1994) A computational analysis of thermal and mechanical conditions for weld metal solidification cracking. Welding in the World 33:340–347.
Zacharia T (1994) Dynamic stresses in weld metal hot cracking. Welding Journal 73:164 s–172 s.
Pumphrey WI and Jennings PH (1948) A consideration of the nature of brittleness and temperature above the solidus in castings and welds in aluminium alloys. Journal Institute of Metals 75:235–256.
Arata Y, Matsuda F, Nakata K and Shinozaki K (1977) Solidification crack susceptibility of aluminum alloy weld metals (Report II)- Effect of straining rate on cracking threshold in weld metal during solidification. Trans JWRI 6:91–104.
Rappaz M, Drezet J-M and Gremaud M (1999) A new hot-tearing criterion. Metal lurgical and Materials Transactions 30A:449–455.
Coniglio N and Cross CE (2009) Mechanisms for solidification crack initiation and growth in aluminum welding. Metallurgical and Materials Transactions 40A:2718–2728.
Coniglio N and Cross CE (2008) Weld parameter and minor element effects on so lidification crack initiation in aluminum. In: Hot Cracking Phenomena in Welds II. Springer, pp. 277–310.
Dahle K and Arnberg L (1997) Development of strength in solidifying aluminum alloys. Acta Materialia 45:547–559.
Robino CV, Reece M, Knorovsky GA, DuPont JN and Feng Z (2005) Prediction of maximum crack length in longitudinal varestraint testing. In: Proceedings of the 7th International Conference Trends in Welding Research, ASM International, pp. 313–318.
Ganesan S, Chan CL and Poirier DR (1992) Permeability for flow parallel to primary dendrite arms. Materials Science and Engineering-A 151:97–105.
Kannengiesser T, McInerney T, Florian W, Böllinghaus T and Cross, CE (2002) The influence of local weld deformation on hot cracking susceptibility. In: Mathematical Modeling of Weld Phenomena-6, Institute of Materials, pp. 803–818.
Matsuda F, Nakagawa H, Nakata K, Kohmoto H and Honda Y (1983) Quantitative evaluation of solidification brittleness of weld metal during solidification by means of in-situ observation and measurement (Report 1)- Development of the MISO technique. Trans JWRI 12:65–72.
Mousavi MG, Cross CE and Grong Ø (1999) Effect of scandium and titanium-boron on grain refinement and hot cracking of aluminium alloy 7108. Science and Technology of Welding and Joining 4:381–388.
Spittle JA and Cushway AA (1983) Influences of superheat and grain structure on hot tearing susceptibility of Al-Cu alloy castings. Metals Technology 10:6–13.
Drezet J-M and Allehaux D (2008) Application of the Rappaz Drezet Gremaud hot tearing criterion to welding of aluminum alloys. In: Hot Cracking Phenomena in Welds II. Springer, pp. 19–38.
Cross CE, Kramer LS, Tack WT and Loechel LW (1990) Aluminum weldability and hot cracking theory. In: Weldability of Materials, ASM International, pp. 275–282.
Mondolfo LF (1976) Aluminum Alloys- Structure and Properties. Butter worths, London.
Bäckerud L, Król E and Tamminen J (1986) Solidification Characteristics of Aluminium Alloys, Vol. 1. Skanaluminium, Oslo.
Cao G and Kou S (2005) Liquation cracking in full-penetration Al-Si welds. Welding Journal 84:63 s–71 s.
Cao G and Kou S (2006) Predicting and reducing liquation cracking susceptibility based on temperature vs. fraction solid. Welding Journal 85:9 s–18 s.
Arnberg L, Bäckerud L and Chai G (1996), Solidification Characteristics of Aluminium Alloys, Vol. 3. Skanaluminium, Oslo.
Van Horn KR (1967) Aluminum, Vol. 1: Properties, Physical Metallurgy, and Phase Diagrams, ASM International.
Coniglio N, Cross CE, Michael Th and Lammers M (2008) Defining a critical weld dilution to avoid solidification cracking in aluminum. Welding Journal 87:237 s–247 s.
Carlson KD and Beckermann C (2009) Authors’ Reply to Discussion of “Prediction of shrinkage pore volume fraction using a dimensionless Niyama Criterion”. Metallurgical and Materials Transactions 40A:3054–3055.
Easton MA and StJohn DH (2001) A model of grain refinement incorporating alloy constitution and potency of heterogeneous nucleant particles. Acta Materialia 49:1867–1878.
Coniglio N, Cross CE, Dörfel I and Österle W (2009) Phase formation in 6060/4043 aluminum weld solidification. Materials Science and Engineering A 517:321–327.
Alexandrov BT and Lippold JC (2006) A new methodology for studying phase transformations in high strength steel weld metal. In: Proceedings of the 7th International Conference Trends in Welding Research, ASM International, pp. 975–980.
Acknowledgements
The authors are grateful for material donated by Th. Seefeld at BIAS in Bremen. Also acknowledged is technical support at BAM, including metallography performed by R. Breu and weld set-up by K. Babu. Funding for this work was provided through a German DVS/AiF industry research grant.
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Cross, C.E., Coniglio, N., Schempp, P., Mousavi, M. (2011). Critical Conditions for Weld Solidification Crack Growth. In: Böllinghaus, T., Lippold, J., Cross, C. (eds) Hot Cracking Phenomena in Welds III. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-16864-2_2
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DOI: https://doi.org/10.1007/978-3-642-16864-2_2
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