The effects of Zr contents on microstructure and properties of laser additive manufactured Ti-6.5Al-3.5Mo-0.3Si-xZr alloys

Jiao, Zongge; Ma, Cheng; Fu, Jun; Cheng, Xu; Tang, Hao; Liu, Dong; Zhang, Jikui

doi:10.1016/j.jallcom.2018.02.079

Cited by 23 publications

(4 citation statements)

References 20 publications

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“…Zr thus dissolves completely in Ti at high-temperature β (bcc structure) phase region as well as at low-temperature α (hcp structure) phase region, resulting in an alloy with refined microstructures (Jayaprakash et al , 2014; Jiang et al , 2013; Zhang, 2018). Elemental Zr refined the grains in Ti-6.5Al-3.5Mo-0.3Si-xZr (x = 1.5, 2.5, 3.5, 4.5 Wt.%) Ti alloys, thus improving the mechanical properties (Jiao et al , 2018). Fu et al (2015b) observed that an addition of 6 Wt.% Zr to Ti-1100 alloy decreases the size of the prior β grain and α lath spacing while retaining the β phase.…”

Section: Development Of High Strength Near-α Titanium Alloysmentioning

confidence: 99%

Mechanical properties of near alpha titanium alloys for high-temperature applications - a review

Tabie

Wang

et al. 2020

AEAT

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Purpose This paper aims to present a broad review of near-a titanium alloys for high-temperature applications. Design/methodology/approach Following a brief introduction of titanium (Ti) alloys, this paper considers the near-α group of Ti alloys, which are the most popular high-temperature Ti alloys developed for a high-temperature application, particularly in compressor disc and blades in aero-engines. The paper is relied on literature within the past decade to discuss phase stability and microstructural effect of alloying elements, plastic deformation and reinforcements used in the development of these alloys. Findings The near-a Ti alloys show high potential for high-temperature applications, and many researchers have explored the incorporation of TiC, TiB SiC, Y2O3, La2O3 and Al2O3 reinforcements for improved mechanical properties. Rolling, extrusion, forging and some severe plastic deformation (SPD) techniques, as well as heat treatment methods, have also been explored extensively. There is, however, a paucity of information on SiC, Y2O3 and carbon nanotube reinforcements and their combinations for improved mechanical properties. Information on some SPD techniques such as cyclic extrusion compression, multiaxial compression/forging and repeated corrugation and straightening for this class of alloys is also limited. Originality/value This paper provides a topical, technical insight into developments in near-a Ti alloys using literature from within the past decade. It also outlines the future developments of this class of Ti alloys.

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Section: Development Of High Strength Near-α Titanium Alloysmentioning

confidence: 99%

Mechanical properties of near alpha titanium alloys for high-temperature applications - a review

Tabie

Wang

et al. 2020

AEAT

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“…Titanium alloy has been widely used as blades or blisk in the aeroengine compressor for the advantage of high strength to weight ratio and decay resistance [1][2][3] Recently, the blisk made of dual alloy has received much attention due to the dual property of blade and disk applied in different working conditions. [4,5] Dual alloy means that the blade and disk are made of different materials.…”

Section: Introductionmentioning

confidence: 99%

Effects of Trace Boron Addition and Different Arc Types on Microstructure and Mechanical Properties of TC11/TC17 Dual Alloy Fabricated by Wire Arc Additive Manufacturing

et al. 2022

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Wire arc additive manufacturing (WAAM) provides an efficient and low‐cost potential for manufacturing TC11/TC17 dual titanium alloy. In this work, six deposition samples were fabricated for the test of microstructure and mechanical properties by the combination of trace boron addition and different arc types (direct current (DC), high frequency pulsed current (HC), low frequency pulsed current (LC)). Results show that the epitaxial growth β columnar grains were formed except for the combination of low frequency pulsed current and trace boron addition (LCB). A special microstructure of coarser α phases surrounding thin α phases was formed by the effect of LC arc or trace boron addition. Some TiB particles exhibited a specific orientation relationship with surrounding α phases, but not all: (0001)α||(001)TiB and <11‐20>α||[010]TiB. About mechanical properties, the elongation decreased with trace boron addition, and comprehensive mechanical properties of LC method was better than that of DC or HC methods whether it contained trace boron or not, with tensile strength of 1057 MPa and elongation of 14.4% in the longitudinal direction. Meanwhile, the strength of LCB group is highest than that of other groups, which is caused by the refined β grains and the uniform distribution of TiB particles.

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“…The techniques in aluminum alloy powder and its composites additive manufacturing mainly include selective laser sintering (SLS) [19], selective laser melting (SLM) [20,21], a type of powder bed fusion, and laser metal deposition (LMD) [22,23]etc. LMD technology is fast developed and has been successfully applied to titanium alloy [24][25][26], ultra-high strength steel [27], Ti-Al alloy [28] and Al-Li alloy [29] due to its advantages, it does not require a mould, reduces material waste, shortens production cycles, provides rapid prototyping and supports great design flexibility. The early concept of LMD appeared in a 1988 patent describing a method of using lasers to melt deposition metal powders to repair damaged parts [30].…”

Section: Introductionmentioning

confidence: 99%

Mechanically strong, stiff, and yet ductile AlSi7Mg/graphene composites by laser metal deposition additive manufacturing

Cai

Yang

et al. 2021

Materials Science and Engineering: A

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The effects of Zr contents on microstructure and properties of laser additive manufactured Ti-6.5Al-3.5Mo-0.3Si-xZr alloys

Cited by 23 publications

References 20 publications

Mechanical properties of near alpha titanium alloys for high-temperature applications - a review

Mechanical properties of near alpha titanium alloys for high-temperature applications - a review

Effects of Trace Boron Addition and Different Arc Types on Microstructure and Mechanical Properties of TC11/TC17 Dual Alloy Fabricated by Wire Arc Additive Manufacturing

Mechanically strong, stiff, and yet ductile AlSi7Mg/graphene composites by laser metal deposition additive manufacturing

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