Effect of boron addition on microstructure, hardness and wear performance of Ti-6Al-4 V alloy manufactured by laser powder bed fusion additive manufacturing

Verma, Pankaj; Warghane, Sameer; Nichul, Unissa; Kumar, Pawan; Dhole, Ashish; Hiwarkar, Vijay

doi:10.1016/j.matchar.2020.110848

Cited by 35 publications

(13 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The liquidus temperature of the oncesintered Ti-15-4-4 rod measured by differential thermal analysis (DTA, TG-DTA 2200SA, Bruker Corp., Kanagawa, Japan) was 1653 °C. A similar acicular structure was found in many studies on selective-laser-melted Ti-6-4 alloys [21][22][23][24][25][26][27][28][29][30].…”

Section: Discussionsupporting

confidence: 83%

“…Also, additive manufacturing (AM) is expected to be a new technology for manufacturing biocompatible Ti orthopedic implants such as custom-made implants. There have been many studies on the mechanical and microstructural properties of selective-lasermelted Ti-6Al-4V (Ti-6-4) alloys [21][22][23][24][25][26][27][28][29][30]. On the other hand, there are only a few reports on the durability of selective-laser-melted Ti-6-4 artificial hip stems [9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical Performance of Artificial Hip Stems Manufactured by Hot Forging and Selective Laser Melting Using Biocompatible Ti-15Zr-4Nb Alloy

Okazaki

Mori²

2021

Materials

View full text Add to dashboard Cite

We investigated the microstructures, tensile properties, fatigue strengths, and durability limits of hot-forged Ti-15Zr-4Nb (Ti-15-4) alloy artificial hip stems. These properties were compared with those of Ti-15Zr-4Nb-4Ta (Ti-15-4-4) and Ti-6Al-4V (Ti-6-4) alloy stems annealed after selective laser melting. The tensile and fatigue properties of test specimens cut from Ti-15-4 stems annealed after hot forging were excellent compared with those of the Alloclassic Zweymüller Stepless (SL) stem, which is used globally. The 0.2% proof stress (σ0.2%PS), ultimate tensile strength (σUTS), total elongation (TE) at breaking, and fatigue strength (σFS) after 107 cycles were 919 ± 10, 983 ± 9 MPa, 21 ± 1%, and 855 ± 14 MPa, respectively. The durability limit (PD) after 5 × 106 cycles of Ti-15-4 stems was excellent compared with that of the SL stem. The σUTS values of 90°- and 0°-direction-built Ti-15-4-4 rods were 1032 ± 1 and 1022 ± 2 MPa, and their TE values were 14 ± 1% and 16 ± 1%, respectively. The σFS values of annealed 90°-direction-built Ti-15-4-4 and Ti-6-4 rods were 640 ± 11 and 680 ± 37 MPa, respectively, which were close to that of the wrought Ti-15-4 rod (785 ± 17 MPa). These findings indicate that the hot forging and selective laser melting (SLM) techniques can also be applied to the manufacture of artificial hip prostheses. In particular, it was clarified that selective laser melting using Ti-15-4-4 and Ti-6-4 powders is useful for the low-cost manufacturing of custom-made artificial joint prostheses and other prosthetic implants.

show abstract

Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Mechanical Performance of Artificial Hip Stems Manufactured by Hot Forging and Selective Laser Melting Using Biocompatible Ti-15Zr-4Nb Alloy

Okazaki

Mori²

2021

Materials

View full text Add to dashboard Cite

show abstract

“…This implies that the presence of 18 wt% B promote the reaction with Ti to form TiB. A study by Verma et al (2021) showed that the reaction paths given by Equation 1 lead to the formation of TiB particle during laser AM. The reaction given above (Equation 1) explain the observation of TiB particles, instead of TiB2 on the 10 microstructure of the non-pre-heated sample.…”

Section: Optical Microstructurementioning

confidence: 99%

“…The presence of 14 these TiB2 particle was attributed to insufficient energy density to fully melt all the TiB2 powder. It must 15 be noted that the interaction between a laser beam and metallic powder relies on the powder's 16 absorptivity, sizes and physical properties [35]. The energy density E (J/m 3 ) is given by the Equation 2 17 below:…”

Section: Optical Microstructurementioning

confidence: 99%

See 1 more Smart Citation

Effects of substrate heating on the microstructure and hardness of TiB/Ti6Al4V-ELI during laser in-situ metal deposition

Lekoadi¹,

Tlotleng²,

Masina³

2022

SATNT

View full text Add to dashboard Cite

This work investigated the influence of heating temperature (°C) on the microstructure and microhardness of TiB/Ti6Al4V-ELI composite clads that were produced via in-situ alloying using laser metal deposition technique. The samples were produced on a Ti6Al4V base plates which were heated at different temperatures (25°C, 200°C, 300°C, 400°C and 500°C) before they were characterised for microstructure and hardness. It was found that the TiB/Ti6Al4V-ELI sample that was produced on a non-pre-heated base plate was characterized by TiB particles and had the lowest hardness of 511 ± 66 HV. Base plate heating resulted in the formation of TiB whiskers that were dispersed within the titanium matrix. 200°C led to a microstructure with clusters of TiB whiskers hence it had an increased hardness of 651 ± 40 HV. A fine microstructure with homogeneous distribution of the TiB whiskers was obtained at 500°C base plate heating temperature and had hardness of 565 ± 14 HV.

show abstract

Advances in Manufacturing and Processing of Discontinuous Particle-Reinforced Titanium Matrix Composites (TMCs)

Wu,

Liu,

Ren

et al. 2023

Advances in Material Research and Technology

View full text Add to dashboard Cite

Effect of boron addition on microstructure, hardness and wear performance of Ti-6Al-4 V alloy manufactured by laser powder bed fusion additive manufacturing

Cited by 35 publications

References 58 publications

Mechanical Performance of Artificial Hip Stems Manufactured by Hot Forging and Selective Laser Melting Using Biocompatible Ti-15Zr-4Nb Alloy

Mechanical Performance of Artificial Hip Stems Manufactured by Hot Forging and Selective Laser Melting Using Biocompatible Ti-15Zr-4Nb Alloy

Effects of substrate heating on the microstructure and hardness of TiB/Ti6Al4V-ELI during laser in-situ metal deposition

Advances in Manufacturing and Processing of Discontinuous Particle-Reinforced Titanium Matrix Composites (TMCs)

Contact Info

Product

Resources

About