Tecnologia em Metalurgia, Materiais e Mineração
https://tecnologiammm.com.br/article/doi/10.4322/2176-1523.20212449
Tecnologia em Metalurgia, Materiais e Mineração
Artigo Original - Edição Especial “Tributo ao Prof. T. R. Strohaecker”

Study of fatigue crack growth behavior of cold worked and aged TiNbSn alloys

Tiago Nunes Lima, Thiago Figueiredo Azevedo, Luiz Carlos Pereira, Sandro Griza

Downloads: 1
Views: 77

Resumo

Titanium alloys are used in several engineering fields. TiNbSn alloys have advantages with respect to mechanical properties, if compared to other titanium alloys. Cold worked TiNbSn alloys can undergoes elastic modulus less than half of the modulus of Ti6Al4V alloy, for example. The study aims to investigate the fatigue crack growth behavior (da/dN x ΔK) of cold worked and aged TiNbSn alloys according to the niobium (Nb) and tin (Sn) contents and heat treatment. Cold-rolled Ti35Nb2Sn, Ti42Nb2Sn and Ti42Nb alloys were manufactured with 55% engineering thickness reduction and aged at 400°C for 48 hours. The 42% Nb content and aging heat treatment enhanced the crack growth behavior as in the Paris regime as in the crack growth threshold (Kth), which was attributed to the crack tortuosity exhibited by the alloys. The tortuosity leads to the roughness induced crack closure effect. The Kth increased with the aging due to the α precipitation in the β grains.

Palavras-chave

TiNbSn alloy; Cold working; Aging; Fatigue crack growth.

Referências

1 Azevedo TF, de Andrade CEC, dos Santos SV, Silva AS, Griza S. Fatigue and corrosion-fatigue strength of hot rolled Ti35Nb2.5Sn alloy. Materials & Design. 2015;85:607-612.

2 Griza S, de Souza Sá DHG, Batista WW, de Blas JCG, Pereira LC. Microstructure and mechanical properties of hot rolled TiNbSn alloys. Materials & Design. 2014;56:200-208.

3 Jung TK, Lee HS, Semboshi S, Masahashi N, Abumiya T, Hanada S. A new concept of hip joint stem and its fabrication using metastable TiNbSn alloy. Journal of Alloys and Compounds. 2012;536(Suppl. 1):S582-S585.

4 Hanada S, Masahashi N, Jung TK, Yamada N, Yamako G, Itoi E. Fabrication of a high-performance hip prosthetic stem using β Ti-33.6Nb-4Sn. Journal of the Mechanical Behavior of Biomedical Materials. 2014;30:140-149.

5 Azevedo TF, Lima TN, Macedo MD, de Blas JG, Griza S. Fracture mechanics behavior of TiNbSn alloys as a function of alloy content, cold working and aging. Engineering Fracture Mechanics. 2020;229:106946.

6 Azevedo TF, Lima TN, Blas JG, Pereira LC, Griza S. The mechanical behavior of TiNbSn alloys according to alloying contents, cold rolling and aging. Journal of the Mechanical Behavior of Biomedical Materials. 2017;75:33-40.

7 Shi XH, Zeng WD, Shi CL, Wang HJ, Jia ZQ. The effects of colony microstructure on the fatigue crack growth behavior for Ti-6A1-2Zr-2Sn-3Mo-1Cr-2Nb titanium alloy. Materials Science and Engineering A. 2015;621:252-258.

8 Yoder GR, Cooley LA, Crooker TW. Observations on microstructurally sensitive fatigue crack growth in a widmanstaetten Ti-6Al-4V alloy. Metallurgical Transactions A. 1977;8A(11):1737-1743.

9 Peralta P, Villarreal T, Atodaria I, Chattopadhyay A. Mechanical length scales and their link to fatigue crack growth kinetics in beta-annealed Ti-6Al-4V. Scripta Materialia. 2012;66(1):13-16.

10 Gao PF, Lei ZN, Wang XX, Zhan M. Deformation in fatigue crack tip plastic zone and its role in crack propagation of titanium alloy with tri-modal microstructure. Materials Science and Engineering A. 2019;739:198-202.

11 Boyer RR. An overview on the use of titanium in the aerospace industry. Materials Science and Engineering A. 1996;213(1–2):103-114.

12 Qiu J, Feng X, Ma Y, Lei J, Liu Y, Huang A, et al. Fatigue crack growth behavior of beta-annealed Ti-6Al-2Sn4Zr-xMo (x = 2, 4 and 6) alloys: Influence of microstructure and stress ratio. International Journal of Fatigue. 2016;83:150-160.

13 Verdhan N, Bhende DD, Kapoor R, Chakravartty JK. Effect of microstructure on the fatigue crack growth behaviour of a near-α Ti alloy. International Journal of Fatigue. 2015;74:46-54.

14 Ravichandran KS, Dwarakadasa ES. Fatigue crack growth transitions in Ti-6Al-4V alloy. Scripta Metallurgica. 1989;23(10):1685-1690.

15 Ravichandran KS. Fatigue crack closure as influenced by microstructure in Ti-6Al-4V. Scripta Metallurgica et Materialia. 1990;24:1559-1563.

16 Adib AML, Baptista CARP. An exponential equation of fatigue crack growth in titanium. Materials Science and Engineering A. 2007;452–453:321-325.

17 Iost A, Lesage J. On the existence of a pivot point for stage II fatigue crack growth. Engineering Fracture Mechanics. 1990;36(4):585-596.

18 Chand S, Garg SBL. Crack propagation under constant amplitude loading. Eng. Fracfure Mech. 1985;21:1-30.

19 ASTM International. ASTM E399-19. Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness K Ic of Metallic Materials. Conshohocken: ASTM International.

20 ASTM International. ASTM E1290-08. Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement. Conshohocken: ASTM International.

21 British Standards Institution – BSI. BS 7448-1. Fracture mechanics toughness tests. Method for determination of KIc, critical CTOD and critical J values of metallic materials. London: BSI.

22 International Organization – ISO. BS ISO 12108. Metallic materials — Fatigue testing — Fatigue crack growth method. Geneva: ISO.

23 Matsumoto H, Watanabe S, Hanada S. Microstructures and mechanical properties of metastable β TiNbSn alloys cold rolled and heat treated. Journal of Alloys and Compounds. 2007;439(1-2):146-155.

24 Lopes ESN, Cremasco A, Afonso CRM, Caram R. Effects of double aging heat treatment on the microstructure, Vickers hardness and elastic modulus of Ti-Nb alloys. Materials Characterization. 2011;62(7):673-680.

25 Jung TK, Semboshi S, Masahashi N, Hanada S. Mechanical properties and microstructures of β Ti-25Nb-11Sn ternary alloy for biomedical applications. Materials Science and Engineering C. 2013;33(3):1629-1635.

26 Boyce BL, Ritchie RO. Effect of load ratio and maximum stress intensity on the fatigue threshold in Ti-6Al-4V. Engineering Fracture Mechanics. 2001;68:129-147.

27 Kruger L, Grundmann N, Trubitz P. Influence of microstructure and stress ratio on fatigue crack growth in a Ti-6-22-22-S alloy. Materials Today: Proceedings. 2015;2S:S205-S211.

28 Zaiken E, Ritchie RO. Effects of microstructure on fatigue crack propagation and crack closure behavior in aluminum alloy 7150. Materials Science and Engineering. 1985;70:151-160.

29 Sun W, Ma Y, Huang W, Zhang W, Qian X. Effects of build direction on tensile and fatigue performance of selective laser melting Ti6Al4V titanium alloy. International Journal of Fatigue. 2020;130:105260.

30 Ravichandran KS. Fracture mode transitions during fatigue crack growth in Ti-6Al-4V alloy. Scripta Metallurgica et Materialia. 1990;24:1275-1280.

31 Zhu ML, Xuan FZ, Wang GZ. Effect of microstructure on fatigue crack propagation behavior in a steam turbine rotor steel. Materials Science and Engineering A. 2009;515(1-2):85-92.

32 Zaiken E, Ritchie RO. Effects of microstructure on fatigue crack propagation and crack closure behavior in aluminum alloy 7150. Materials Science and Engineering. 1985;70:151-160.


Submetido em:
14/08/2020

Aceito em:
26/04/2021

60a3b709a953954e017fa042 tmm Articles
Links & Downloads

Tecnol. Metal. Mater. Min.

Share this page
Page Sections