A process-microstructure finite element simulation framework for predicting phase transformations and microhardness for directed energy deposition of Ti6Al4V
Source abstract
Abstract
Abstract This paper presents a process-microstructure finite element modeling framework for predicting the evolution of volumetric phase fractions and microhardness during laser directed energy deposition (DED) additive manufacturing of Ti6Al4V. Based on recent experimental observations, the present microstructure evolution model is formulated to combine the formation and dissolution kinetics of grain boundary, Widmanstatten colony/basketweave, massive/martensitic alpha and beta phases of Ti6Al4V. The microstructure evolution algorithm is verified and embedded into a three-dimensional finite element process simulation model to simulate thermally driven phase transformations during DED processing of a Ti6Al4V thin-walled rectangular sample. The microhardness values of different locations of the part, which experience different thermal histories, are computed based on the simulated fractions and hardness values of different phases in the final microstructure. The simulated volumetric phase fractions and related microhardness distribution agree reasonably well with experimental measurements performed on the sample. Thus the proposed simulation model could be useful for designers to understand and control process-microstructure-property relationships in a DED-processed part.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · High Entropy Alloys Studies · Welding Techniques and Residual Stresses
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (71)
Show source-provided references
1. Laser additive manufacturing of metallic components: materials, processes and mechanisms
2. Metal additive manufacturing: a review10.1007/s11665-014-0958-z ↗
3. The rise of 3-D printing: the advantages of additive manufacturing over traditional manufacturing10.1016/j.bushor.2017.05.011 ↗
4. Additive manufacturing: technology, applications and research needs10.1007/s11465-013-0248-8 ↗
5. An overview of direct laser deposition for additive manufacturing; part II: mechanical behavior, process parameter optimization and control
6. Additive manufacturing of metallic components – process, structure and properties10.1016/j.pmatsci.2017.10.001 ↗
7. An overview of direct laser deposition for additive manufacturing; part I: transport phenomena, modeling and diagnostics
8. Residual stress and distortion modeling of Electron beam direct manufacturing Ti-6Al-4V10.1177/0954405414539494 ↗
9. Thermo-mechanical model development and validation of directed energy deposition additive manufacturing of Ti–6Al–4V
10. Finite element modeling and validation of thermomechanical behavior of Ti-6Al-4V in directed energy deposition additive manufacturing
11. Controlling of residual stress in additive manufacturing of Ti6Al4V by finite element modeling
12. An improved prediction of residual stresses and distortion in additive manufacturing10.1016/j.commatsci.2016.10.003 ↗
13. A modified method for estimating inherent strains from detailed process simulation for fast residual distortion prediction of single-walled structures fabricated by directed energy deposition
14. Mechanical properties and microstructural features of direct laser-deposited Ti-6Al-4V10.1007/s11837-015-1308-9 ↗
15. Additive manufacturing of metals: a brief review of the characteristic microstructures and properties of steels, Ti-6Al-4V and high-entropy alloys10.1080/14686996.2017.1361305 ↗
16. Microstructural characterization and comparison of Ti-6Al-4V manufactured with different additive manufacturing processes10.1016/j.matchar.2018.02.003 ↗
17. Anisotropy and heterogeneity of microstructure and mechanical properties in metal additive manufacturing: a critical review10.1016/j.matdes.2017.11.021 ↗
18. Microstructural modelling in metals processing10.1016/S0079-6425(00)00004-9 ↗
19. A model for Ti–6Al–4V microstructure evolution for arbitrary temperature changes10.1088/0965-0393/20/5/055006 ↗
20. Simulation of additive manufacturing using coupled constitutive and microstructure models
21. Understanding the microstructure formation of Ti-6Al-4V during direct laser deposition via in-situ thermal monitoring10.1007/s11837-015-1767-z ↗
22. Modelling of metal deposition10.1016/j.finel.2011.05.005 ↗
23. Approaches in computational welding mechanics applied to additive manufacturing: review and outlook10.1016/j.crme.2018.08.004 ↗
24. Thermomechanical modeling of additive manufacturing large parts10.1115/1.4028669 ↗
25. Modeling metal deposition in heat transfer analyses of additive manufacturing processes10.1016/j.finel.2014.04.003 ↗
26. A thermal-mechanical finite element workflow for directed energy deposition additive manufacturing process modeling
27. Residual stress and distortion of rectangular and S-shaped Ti-6Al-4V parts by directed energy deposition: modelling and experimental calibration
28. Thermal and microstructure modeling of metal deposition processes with application to Ti-6Al-4V
29. Microstructural evolution in laser-deposited multilayer Ti-6Al-4V builds: part I. Microstructural characterization10.1007/s11661-004-0094-8 ↗
30. Microstructural evolution in laser-deposited multilayer Ti-6Al-4V builds: part II. Thermal modeling10.1007/s11661-004-0095-7 ↗
31. Modelling microstructure evolution of weld deposited Ti6Al4V
32. Modelling Ti–6Al–4V microstructure by evolution laws implemented as finite element subroutines: application to TIG metal deposition
33. Effect of phase transformations on laser forming of Ti–6Al–4V alloy10.1063/1.1944202 ↗
34. Crespo · 2011
35. Finite element analysis of the rapid manufacturing of Ti-6Al-4V parts by laser powder deposition10.1016/j.scriptamat.2010.03.036 ↗
36. Modeling the microstructure evolution during additive manufacturing of Ti6Al4V: a comparison between Electron beam melting and selective laser melting10.1007/s11837-016-1890-5 ↗
37. A metallurgical phase transformation framework applied to SLM additive manufacturing processes10.1016/j.matdes.2019.107618 ↗
38. Modeling of microstructure evolution of Ti6Al4V for additive manufacturing10.3390/met8080633 ↗
39. Predicting microstructure from thermal history during additive manufacturing for Ti-6Al-4V10.1115/1.4033525 ↗
40. Deposition of Ti-6Al-4V using laser and wire, part II: hardness and dimensions of single beads10.1016/j.surfcoat.2011.07.094 ↗
41. Rapid tooling by laser powder deposition: process simulation using finite element analysis10.1016/j.actamat.2005.05.003 ↗
42. Laser transformation hardening of Ti-6Al-4V in Solid State with accompanying kinetic model10.1179/174329407X169467 ↗
43. Analysis of microstructure and mechanical properties change in laser welding of Ti6Al4V with a multiphysics prediction model10.1016/j.jmatprotec.2016.06.034 ↗
44. Additive manufacturing of Ti6Al4V alloy: a review10.1016/j.matdes.2018.107552 ↗
45. Predicting microstructure evolution during directed energy deposition additive manufacturing of Ti-6Al-4V10.1115/1.4038894 ↗
46. Thermal decomposition of massive phase to fine lamellar α/β in Ti–6Al–4V additively manufactured alloy by directed energy deposition10.1007/s12540-019-00304-4 ↗
47. Influence of cooling rate on volume fraction of α massive phase in a Ti-6Al-4V alloy fabricated using directed energy deposition10.1016/j.matlet.2019.126671 ↗
48. Phase transformations during cooling in α+β titanium alloys10.1016/S0921-5093(97)00802-2 ↗
49. Phase transformation dynamics during welding of Ti-6Al-4V10.1063/1.1737476 ↗
50. Massive transformation in Ti–6Al–4V additively manufactured by selective Electron beam melting10.1016/j.actamat.2015.11.011 ↗
51. In situ tailoring microstructure in additively manufactured Ti-6Al-4V for superior mechanical performance10.1016/j.actamat.2016.12.027 ↗
52. Microstructural evolution and microhardness of a selective-laser-melted Ti-6Al-4V alloy after post heat treatments10.1016/j.jallcom.2016.02.183 ↗
53. A general equation prescribing the extent of the austenite-martensite transformation in pure iron-carbon alloys and plain carbon steels10.1016/0001-6160(59)90170-1 ↗
54. On the statistical theory of the crystallization of metals
55. Reaction kinetics in processes of nucleation and growth
56. Granulation, phase change, and microstructure kinetics of phase change. III10.1063/1.1750872 ↗
57. Anlaufzeit der Austenitumwandlung10.1002/srin.193500186 ↗
58. Christian · 2003
59. A finite element model for the simulation of direct metal deposition
60. Influence of tempering temperature and time on the α′-Ti-6Al-4V martensite10.1016/0925-8388(95)02057-8 ↗
61. Laser engineered net shaping advances additive manufacturing and repair
62. A new finite element model for welding heat sources10.1007/BF02667333 ↗
63. Evaluation of a thermomechanical model for prediction of residual stress during laser powder bed fusion of Ti-6Al-4V
64. Measurement of phase transformation kinetics during repeated thermal cycling of TI-6AL-4V using time-resolved X-ray diffraction
65. M. Mitchell, B. Muftakhidinov, T. Winchen, Engauge Digitizer Software, http://markummitchell.github.io/engauge-digitizer, Last Accessed: January 9, 2020.
66. Leyens · 2003
67. Boyer · 1994
68. Material properties of Ti6Al4 v parts produced by laser metal deposition10.1016/j.phpro.2012.10.056 ↗
69. Intra-layer closed-loop control of build plan during directed energy additive manufacturing of Ti-6Al-4V
70. Microstructural characterization and comparison of Ti-6Al-4V manufactured with different additive manufacturing processes10.1016/j.matchar.2018.02.003 ↗
71. Effect of processing conditions on the microstructure, porosity, and mechanical properties of Ti-6Al-4V repair fabricated by directed energy deposition10.1016/j.jmatprotec.2018.08.041 ↗