Effect of heat treatment on erosive wear behaviour of Ti6Al4V alloy

Abstract

In this paper, the erosive wear behaviour of Ti6Al4V alloy depending on various heat treatment conditions was evaluated. It is aimed to understand the relationship between the microstructure and the erosion rate of Ti6Al4V alloys. Furthermore, the hardness and the surface morphology variations depending on the annealing parameters and the effects of these parameters on the erosion behaviour of the annealed Ti6Al4V alloy were also considered. Moreover, eroded surfaces of samples were examined by using a scanning electron microscope in order to understand dominant material removal mechanisms depending on the annealing parameters. Results showed that the aging process has dramatically affected the erosion resistance of Ti6Al4V alloy. The microstructure and the hardness of the samples have significantly affected the erosion resistance of the alloy. Surprisingly, erosion resistance decreased when the hardness increased. Finally, SEM investigations of the eroded surfaces of the heat treated samples showed that microcutting and microploughing were the dominant erosion mechanisms occurred during the erosion process.

Surface, Subsurface and Tribological Properties of Ti6Al4V Alloy Shot Peened under Different Parameters

“…Titanium (Ti) alloys are widely used in implants [ 1 , 2 ], orthopaedic applications [ 3 ], chemical [ 4 ], automotive [ 5 , 6 ], and aerospace [ 7 , 8 ] industries owing to their high specific strength [ 9 , 10 , 11 ], corrosion resistance [ 6 , 12 , 13 ], non-toxicity [ 14 , 15 ], high biocompatibility [ 15 ], and fatigue [ 6 ] as well as formability [ 4 ]. However, they exhibit poor tribological properties [ 6 , 16 ] due to their low resistance to shear deformation [ 7 ], which limits their use in various applications [ 3 , 4 ].…”

Tribological performance of polymethyl methacrylate as an aviation polymer

“…Moreover, micro cracks and craters caused by the normal impact of the erodent particles can also be seen in Figure 8B and a network of cracks (marked as 3) has developed. Ductile materials such as metals and polymers undergo wear specifically at impingement angles of 15° and 30° by the effects of parallel forces (Fp) mentioned above [35][36][37][38]. Erosion rates of PMMA samples are increased at low impingement angles and maximum erosion occurred at a 30° impingement angle.…”

“…The solid particle erosion behavior of materials depends on operational parameters, specifically the impingement angle [35][36][37][38]. It is reported that the impact force of the erodent particles can be divided in two constituents: one parallel (Fp) to the surfaces of the material and one orthogonal (Fv) [38].…”

Slurry Erosion–Corrosion Characteristics of As-Built Ti-6Al-4V Manufactured by Selective Laser Melting

“…Thanks to these advantageous characteristics, Ti-6Al-4V has emerged as a powerful alloy for a wide field of applications. In addition to its wide use in surgical instruments and medical implants, it is currently used as a material for aerospace components (i.e., engine compressor blades and disks and helicopter rotor blades) [ 7 , 8 , 9 ], marine and offshore components (i.e., marine ship hulls, propellers, tubes, and shells) [ 1 , 10 , 11 ], oil and wastewater systems components (i.e., valves, pipelines, pipe fittings, and pumps) [ 12 , 13 , 14 ], hydropower plant components (i.e., turbine blades, pumps) [ 15 , 16 , 17 ], and architectural cladding and roofing [ 11 ]. These components are typically exposed to slurry erosion, where the working surfaces are continuously impacted by a stream of a slurry mixture.…”

“…Surface coatings and heat treatments have been observed to be common practices to improve both surface hardening and strength. It was also reported that the Ti6Al4V alloy has ductile material erosion behavior with maximum erosive wear rate at an impact angle of around 20–30° [ 12 , 27 , 28 , 29 ].…”