Top

Metallurgical and Materials Transactions A

Published in:

10-08-2020

Continuous-Cooling-Transformation (CCT) Behaviors and Fine-Grained Nearly Lamellar (FGNL) Microstructure Formation in a Cast Ti-48Al-4Nb-2Cr Alloy

Authors: Jieren Yang, Zitong Gao, Xiaogan Zhang, Rui Hu

Published in: Metallurgical and Materials Transactions A | Issue 10/2020

Activate our intelligent search to find suitable subject content or patents.

search-config

AI-assisted search

Off

Abstract

The CCT behaviors of a high-Al mid-Nb-containing cast TiAl alloy were experimentally studied in the current work. Samples with the nominal composition of Ti-48.2Al-4Nb-2Cr (at.pct) were preheated to 1420 °C and then cooled at different cooling rates. With preheating time of 8 minutes, the original microstructure was replaced by coarsening α grains. Interrupted tests demonstrated the significant decrease of microsegregation which was also predicted by theoretical calculations. The water-quenched microstructures during continuous cooling were characterized. With the increase of cooling rate from 5 to 700 °C/min, the lamellar spacing was refined from 1.77 to 0.43 μm and the microhardness was heightened from 299 to 426 HV, showing the solute strengthening effect of Nb addition compared with 4722 and Ti-48Al alloys. The CCT diagram of the current alloy was established to guide the microstructure control. Slow cooling contributed to the discontinuous coarsening of γ lamellae, suggesting a nearly lamellar (NL) microstructure. The addition of 4 at. pct Nb increased the temperatures of phase transformations, moved the CCT curves to higher temperature, and decreased the critical cooling rate for the formation of Widmanstatten and feathery structures. Finally, a fine-grained NL (FGNL) microstructure with a potential high performance was obtained.

previous article Origin of Goss (110)〈001〉 Grains in Hot-Worked Grain-Oriented Steel

next article Modelling of Processing Steps of New Generation ODS Alloys

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

über 102.000 Bücher
über 537 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Finance + Banking
Management + Führung
Marketing + Vertrieb
Maschinenbau + Werkstoffe
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 390 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Maschinenbau + Werkstoffe

Jetzt Wissensvorsprung sichern!

inform now

Y-W Kim (1994) JOM. vol. 46, pp. 30-49.

H. Clemens and H. Kestler: Adv. Eng. Mater., 2000, vol. 2, pp. 551-70.

B.P. Bewlay, M. Weimer, T. Kelly, A. Suzuki, and P.R. Subramanian: Intermetallic-Based Alloys-Science, Technology, and Applications, 2012, Mater. Res. Soc. Symp. Proc., vol. 1516, pp. 49–58.

Y-W. Kim and S.L. Kim: JOM, 2018, vol. 70, pp. 553-60.

H. Clemens and S. Mayer: Adv. Eng. Mater., 2013, vol. 15, pp. 191-215.

G. L. Chen, J. P. Lin, X. P. Song, Y. Wang, and Y. R. Ren: Proceedings of the International Symposium on Niobium for High Temperature Applications, 2004, TMS, pp. 153–66.

G.L. Chen, X.J. Xu, Z.K. Teng, Y.L. Wang, and J.P. Lin: Intermetallics, 2007, vol. 15, pp. 625-31.

F. Kong, N. Cui, Y. Chen, and X. Wang: Metall. Mater. Trans. A, 2018, vol. 49A, pp. 5574–84.

S.C. Huang: Structural Intermetallics, 1993, TMS, pp. 299-308.

10.

T. He, R. Hu, T.B. Zhang, and J.S. Li: Acta Metall. Sin., 2016, vol. 29, pp. 714-21.

11.

J. C. Zhao and M. R. Notis: Mater. Sci. Eng. R, 1995, vol.15. pp. 135-207.

12.

S. A. Jones and M. J. Kafuman: Acta Metall. Mater., 1993, vol. 41, pp. 387-98.

13.

D. Hu, A. J. Huang, and X. Wu: Intermetallics, 2007, vol. 15, pp. 327-32.

14.

D.Y. Seo, L. Zhao, and J. Beddoes: Mater. Sci. Eng. A, 2002, vol. A329-31, pp. 130-40.

15.

A. Jacot, A. Rostamian: Mater. Sci. Forum, 2007, vol. 539-43, pp. 1481-86.

16.

U. Prasad and M.C. Chaturvedi: Metall. Mater. Trans. A, 2003, vol. 34A, pp. 2053–66.

17.

M. Charpentier, A. Hazotte, and D. Daloz: Mater. Sci. Eng. A, 2008, vol. 491, pp. 321-30.

18.

Z.C. Luo and H.P. Wang: Metall. Mater. Trans. A, 2020, vol. 51A, pp. 1242–53.

19.

Z.C. Luo and H.P. Wang: J. Mater. Sci. Technol., 2020, vol. 40, pp. 47-53.

20.

P. Erdely, R. Werner, E. Schwaighofer, H. Clemens, and S. Mayer: Intermetallics, 2015, vol. 57, pp. 17-24.

21.

D. Hu and R. R. Botton: Intermetallics, 2007, vol. 10, pp. 701-15.

22.

J. Yang, B. Cao, Y. Wu, Z. Gao, and R. Hu: Materialia, 2019, vol. 5, 100169.

23.

J. Yang, X. Wang, B. Cao, Y. Wu, K. Zhang, and R. Hu: Metall. Mater. Trans. A, 2017, vol. 48A, pp. 1-11.

24.

V. T. Witusiewicz, A. A. Bodar, U. Hecht, and T. Ya. Velikanova: J. Alloys Compd., 2009, vol. 472, pp. 133-61.

25.

Z. Gao, J. Yang, Y. Wu, R. Hu, Y-W. Kim, and S.L. Kim: Metall. Mater. Trans. A, 2019, vol. 50A, pp. 5839-52.

26.

M. H. Loretto, Z. Wu, M. Q. Chu, H. Saage, D. Hu, and M. M. Attallah: Intermetallics, 2012, vol. 23, pp. 1-11.

27.

J. Yang, J. N. Wang, Y. Wang, and Q. Xia: Intermetallics, 2003, vol. 11, pp. 971-74.

28.

K. Zhang, R. Hu, T. Lei, and J. Yang: Scripta Mater., 2019, vol. 172, pp. 113-18.

29.

A. Denquin and S. Naka: Acta Mater., 1996, vol. 44, pp. 353-65.

30.

J. Jung and J. Park: Acta Mater., 1998, vol. 46, pp. 4123-30.

31.

A. Denquin and S. Naka: Acta Mater., 1996, vol. 44, pp. 343-52.

32.

F. Perdrix, M. F. Trichet, J. L. Bonnentien, M. Cornet, and J. Bigot: Intermetallics, 1999, vol. 7, pp. 1323-28.

33.

B. Cao, J. Yang, X. Wang, Y. Wu, and R. Hu: J. Alloys Compd., 2018, vol. 740, pp. 1140-48.

34.

J. Lapin, Z. Gabalcov, O. Bajana, and D. Daloz: Kovove Mater., 2006, vol. 44, pp. 297-306.

35.

Q. Wang, R. Chen, X. Gong, J. Guo, Y. Su, H. Ding, and H. Fu: Metall. Mater. Trans. A, 2018, vol. 49A, pp. 4555–64.

36.

Y.Y Chen, H.Y. Yue, X.P. Wang, S.L. Xiao, F.T. Kong, X.K. Cheng, and H. Peng: Mater. Charact., 2018, vol. 142, pp. 584-92.

37.

M. Koppers, C. Herzig, M. Friesel, and Y. Mishin: Acta Mater., 1997, vol. 45, pp. 4181-91.

38.

J. Lapin and K. Marek: J. Alloy Compd., 2018, vol. 735, pp. 338-48.

39.

K.R. Zhang, R. Hu, J.G. Li, J.R. Yang, and Z.T. Gao: Mater. Lett., 2020, vol. 247, 127940.

40.

S. Chakraborty, P. P. Chattopadhyay, S. K. Ghosh, and S. Datta: Appl. Soft Comput., 2017, vol. 58, pp. 297-306.

41.

X. Geng, H. Wang, W. Xue, S. Xiang, H. Huang, L. Meng, and G. Ma: Comp. Mater. Sci., 2020, vol. 171, 109235.

42.

E. Schwaighofer, H. Clemens, S. Mayer, J. Lindemann, J. Klose, W. Smarsly, and V. Güther: Intermetallics, 2014, vol. 44, pp. 128-40.

43.

S. Gao, X. Xu, Z. Shen, T. Ye, S. Xu, and J. Lin: Mater. Sci. Eng. A, 2016, vol. 677, pp. 89-96.

Title: Continuous-Cooling-Transformation (CCT) Behaviors and Fine-Grained Nearly Lamellar (FGNL) Microstructure Formation in a Cast Ti-48Al-4Nb-2Cr Alloy
Authors: Jieren Yang
Zitong Gao
Xiaogan Zhang
Rui Hu
Publication date: 10-08-2020
Publisher: Springer US
Published in: Metallurgical and Materials Transactions A / Issue 10/2020
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI: https://doi.org/10.1007/s11661-020-05934-7

Springer Professional

Abstract

Please log in to get access to your license.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Springer Professional "Technik"

Other articles of this Issue 10/2020

Phase Stress Partition in Gray Cast Iron Using In Situ Neutron Diffraction Measurements

In Situ Analysis of Multiphase Compounds at the Liquid Al-Solid Cu Interface: Formation Sequence, Growth Kinetics and Critical Thickness

High Temperature Oxidation Study of Nano-Y2O3 Dispersed Ferritic Alloys Synthesized by Mechanical Alloying and Sintering

Phase Evolution-Dependent Nanomechanical Properties of Al86Ni8Y6 and Al86Ni6Y4.5Co2La1.5 Spark Plasma-Sintered Bulk Amorphous Composites

Effect of the Process Gas and Scan Speed on the Properties and Productivity of Thin 316L Structures Produced by Laser-Powder Bed Fusion

Inhomogeneous Strains and Dislocation Evolution in Surface-Treated Ni-Base Superalloys

Premium Partners