Investigation and optimization of heat treatment process on tensile behaviour of Ti6Al4V alloy

Abstract

This article examines the microstructure and tensile strength of annealed Ti6Al4V alloy at different temperatures and times. Taguchi based L9 (32) design was used for the experimental design matrix and optimization of the tensile strength of heat treated samples. The optimum parameter combination was at the temperature of 950 °C and soaking time of 1 hour. ANOVA results show that temperature is the most influencing parameter and a regression equation of degree two was developed to predict tensile strength. Results of the microstructure show lamellar structure development within the samples heat‐treated at 1000 °C.

Joint integrity evaluation of laser beam welded additive manufactured Ti6Al4V sheets

“…The AM welds show a slight reduction in elongation compared to the parent/base material with a tensile strength of 672 MPa. This is presumably due to the α’martensitic microstructure within the fusion zone (FZ), resulting in reduced ductility in Ti6Al4V as also observed by 43 , 44 . The maximum stress of the AM welds shown in Fig.…”

Archives of Metallurgy and Materials

“…The microstructure of the Ti6al4V and Ti6al4V eli is made of the alpha (α) and the beta (β) phases at room temperature [3,24]. at the β transus temperature of Ti6al4V (995°C), the phases transform [5]. however, the temperature attained in haZ is said to be around the β transus temperature or higher but lower than the liquidus temperature, even if the boundary between the haZ and FZ can sometimes be challenging to determine.…”

“…Titanium alloy grade 5 (Ti6al4V) and titanium alloy grade 23 (Ti6al4V eli) have been tremendously used in various industries, especially in the biomedical sector [1][2][3][4]. bone implants have been made of Ti6al4V eli and Ti6al4V due to the material's high corrosion resistance and its shear strength [5][6][7]. Several fusion welding techniques, such as laser welding, metal inert gas welding, and tungsten inert gas welding, have been commonly used in joining Ti6al4V [8][9][10].…”