Anisotropic mechanical behavior of biomedical Ti-13Nb-13Zr alloy manufactured by selective laser melting

Zhou, Libo; Yuan, Tiechui; Li, Ruidi; Tang, Jianzhong; Wang, Minbo; Mei, Fangsheng

doi:10.1016/j.jallcom.2018.05.179

Cited by 84 publications

(12 citation statements)

References 51 publications

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“…Therefore, in recent years, more types of pre-alloyed β-type Ti alloy powder have been developed. More β-type Ti alloys produced by selective laser melting were reported, including Ti-45Nb [173], Ti-35Zr-28Nb [174], Ti-15Mo-5Zr-3Al [68], Ti-13Nb-13Zr [175], etc. However, preparing pre-alloyed powder significantly increases the cost of SLM-produced β-type Ti alloys.…”

Section: Additive Manufacturingmentioning

confidence: 99%

Recent Development in Beta Titanium Alloys for Biomedical Applications

Chen

Cui

Zhang

2020

Metals

203

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β-type titanium (Ti) alloys have attracted a lot of attention as novel biomedical materials in the past decades due to their low elastic moduli and good biocompatibility. This article provides a broad and extensive review of β-type Ti alloys in terms of alloy design, preparation methods, mechanical properties, corrosion behavior, and biocompatibility. After briefly introducing the development of Ti and Ti alloys for biomedical applications, this article reviews the design of β-type Ti alloys from the perspective of the molybdenum equivalency (Moeq) method and DV-Xα molecular orbital method. Based on these methods, a considerable number of β-type Ti alloys are developed. Although β-type Ti alloys have lower elastic moduli compared with other types of Ti alloys, they still possess higher elastic moduli than human bones. Therefore, porous β-type Ti alloys with declined elastic modulus have been developed by some preparation methods, such as powder metallurgy, additive manufacture and so on. As reviewed, β-type Ti alloys have comparable or even better mechanical properties, corrosion behavior, and biocompatibility compared with other types of Ti alloys. Hence, β-type Ti alloys are the more suitable materials used as implant materials. However, there are still some problems with β-type Ti alloys, such as biological inertness. As such, summarizing the findings from the current literature, suggestions forβ-type Ti alloys with bioactive coatings are proposed for the future development.

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Section: Additive Manufacturingmentioning

confidence: 99%

Recent Development in Beta Titanium Alloys for Biomedical Applications

Chen

Cui

Zhang

2020

Metals

203

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“…The authors revealed slight anisotropy in the powder layer melting direction (horizontal) and in the layer addition direction (vertical); the reason for the abovenamed anisotropy being the presence of twin boundaries in the structure in the vertical direction and the arrangement of beta grains in the privileged direction in the longitudinal position. The structure of test specimens revealed the predominant presence of phase β and acicular martensite α' [6,[27][28][29]…”

Section: Alloy Ti13nb13zrmentioning

confidence: 99%

Characteristics of Titanium Alloys used in the SLM Additive Technology

Szczepański

Pilarczyk

Ambroziak

2019

eBIS

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“…Effects of build direction on the microstructure and mechanical properties have been studied for several metallic alloys produced through SLM processes, such as Ni-based superalloys [ 5 , 6 , 7 , 8 ], titanium alloys [ 5 , 9 , 10 , 11 , 12 , 13 , 14 ], aluminum alloys [ 5 , 15 , 16 ], and steels [ 5 , 17 , 18 , 19 , 20 , 21 ]. Chen et al [ 5 ] reveal that metallic AM parts of various materials exhibit layer-wise morphologies in the cross sections along the build direction, leading to an anisotropic microstructure.…”

Section: Introductionmentioning

confidence: 99%

Effects of Build Direction on the Mechanical Properties of a Martensitic Stainless Steel Fabricated by Selective Laser Melting

Shen

Yang

et al. 2020

Materials

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Mechanical properties and microstructure are investigated for a martensitic stainless steel (AISI 420) fabricated by selective laser melting (SLM) in three build directions. The tensile specimens built by SLM are classified into three groups. Group A is horizontally built in the thickness direction, Group B is horizontally built in the width direction, and Group C is vertically built in the length direction. The loading direction in tensile test is parallel to the build direction of Group C, but perpendicular to that of Groups A and B. Experimental results indicate build direction has significant effects on the residual stress, hardness, and tensile properties of SLM builds. Microstructural analyses indicate the as-fabricated SLM AISI 420 builds exhibit elongated cells and acicular structures which are composed of martensite and retained austenite phases growing along the build direction. Such anisotropy in the microstructure leads to anisotropic mechanical properties as Group C specimens (length direction) exhibit greater yield stress, ultimate tensile stress, and elongation than the specimens of Groups A (thickness direction) and B (width direction). The residual compressive stress in the gauge section also contributes to the superior tensile properties of Group C (length direction), as compared to Groups A (thickness direction) and B (width direction), which exhibit residual tensile stress in the gauge section.

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Anisotropic mechanical behavior of biomedical Ti-13Nb-13Zr alloy manufactured by selective laser melting

Cited by 84 publications

References 51 publications

Recent Development in Beta Titanium Alloys for Biomedical Applications

Recent Development in Beta Titanium Alloys for Biomedical Applications

Characteristics of Titanium Alloys used in the SLM Additive Technology

Effects of Build Direction on the Mechanical Properties of a Martensitic Stainless Steel Fabricated by Selective Laser Melting

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