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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Powder Metallurgy of Light, Reactive and Other Non-ferrous Metals
Presentation Title Cost Down and Plain Design of High-performance Titanium via Additive Manufacturing
Author(s) Gang Chen, Wangwang Ding, Qiying Tao, Mingli Qin, Xuanhui Qu
On-Site Speaker (Planned) Gang Chen
Abstract Scope Currently, additive manufacturing of high-performance Ti alloys suffers the high-cost powder feedstock and heavy dependence on rare-metal alloying. This works demonstrates an innovative and facile pathway towards low-cost HDH Ti powder feedstock for AM by gas-solid fluidization, which lowers its cost over 50 % as compared with the atomized powders. Besides, compositional tailoring during fluidization can be achieved via simultaneous reaction with ubiquitous interstitial elements for HDH CP-Ti powders. The as-fabricated CP-Ti by SLM using fluidized powders exhibited superior tensile properties (UTS=11556 MPa, YS=108329 MPa, EL=131.6 %) at room temperature, surprisingly comparable with Ti-6Al-4V. This can be attributed to the strengthening-and-toughening effect on CP-Ti induced by interstitial solid solution and nanoscale-interface microstructure. Contrary to the conventional metallurgical mechanism for Ti, this work presents SLMed CP-Ti with excellent synergy of strength and ductility while using HDH Ti powders, which surmounts the cost-performance dilemma and realizes plain design for high-performance Ti materials.
Proceedings Inclusion? Planned:
Keywords Titanium, Additive Manufacturing, Powder Materials

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Accelerated Powder Consolidation in Nanocrystalline Materials Competes with Organic Burn-off
Cost Down and Plain Design of High-performance Titanium via Additive Manufacturing
Influence of Calcium Powder in Heavily Deformed Aluminum-calcium Metal-metal Composites
Investigations of Phase Transformations in a Blended Elemental Ti-Nb-Zr-O Alloys Prepared by a Field-assisted Sintering Technique
Microstructural Refinement and Uniformity of Refractory Metals
Microstructural/Mechanical Properties Relationship of Elongated Ti-15Mo Bars Produced by Unconventional Spark Plasma Sintering Technology
Scaling Up Porous Copper Foams by Planetary Milling and Oxide Reduction
Titanium Near Net Shape PM Parts Produced by Direct Powder Forging

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