Fracture surfaces of Ti-6Al-4V specimens under quasi-static loading in inert and aggressive environments. (September 2019)

• Record Type: Journal Article
• Authors: Baragetti, S.; Borzini, E.; Božić, Ž.; Arcieri, E.V.
• Is Part Of: Engineering failure analysis. Volume 103(2019)
• Page Start: 132
• Page End: 143
• Publication Date: 2019-09
• Subjects: Ti-6Al-4V -- Quasi-static loading test -- Inert & aggressive environment -- Macroscopic analysis; UTS Ultimate Tensile Strength (MPa) -- YS Yield stress (MPa) -- E Young's modulus (MPa) -- A Elongation (%) -- SCF Stress concentration factor -- ε̇ strain rate -- Δσ increment of load between two loading steps -- Δt duration of the step -- σmax Stress to failure (MPa); System failures (Engineering) -- Periodicals; Fracture mechanics -- Periodicals; Reliability (Engineering) -- Periodicals; Pannes -- Périodiques; Rupture, Mécanique de la -- Périodiques; Fiabilité -- Périodiques; Fracture mechanics; Reliability (Engineering); System failures (Engineering); Periodicals; Electronic journals; 620.112
• DOI: 10.1016/j.engfailanal.2019.04.072
• Languages: English
• ISSNs: 1350-6307

Abstract

Abstract: Due to its remarkable strength-to-weight ratio, the bimodal Ti-6Al-4V titanium alloy is widespread in high performance engineering sectors. Its good corrosion resistance is due to a surface oxide, which however can be damaged under cyclic loading and in harsh environments. This paper aims to clarify the fracture behavior of some specimens quasi-statically tested in inert and aggressive environments from a phenomenological point of view, by means of the macroscopic analysis of the fracture surfaces. The effect of different notches was investigated. Highlights: A macroscopic analysis of the fracture surfaces was carried out; The influence of the stress concentration factor was noticed; The influence of the aggressive environment was noticed