Substantially strengthening a dual-phase titanium alloy by moderate oxygen doping

Article Nanoscience & Nanotechnology

Avoiding oxygen-induced early fracture in titanium with high strength via entangled grains through laser powder bed fusion

Kewei Chen et al.

Summary: Increasing oxygen content enhances the yield strength of L-PBF Ti without sacrificing ductility, possibly due to the entangled grains and formation of multiple slip systems that prevent intergranular crack propagation.

SCRIPTA MATERIALIA (2023)

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Article Engineering, Mechanical

In-situ investigation of plasticity in a Ti-Al-V-Fe (α plus β) alloy: Slip mechanisms, strain localization, and partitioning

Shaolou Wei et al.

Summary: The study focused on an in-situ mechanistic investigation of a Ti-Al-V-Fe (alpha+beta) alloy, revealing a moderate partitioning trend between alpha- and beta-phases and prominent strain localization bands influenced by texture-facilitated prismatic a slip activation and near-ideal slip transfer conditions across the alpha/beta phase boundaries. Postmortem and in-situ damage analyses confirmed the significant role of these long-range strain localization bands in accelerating surface cracking events.

INTERNATIONAL JOURNAL OF PLASTICITY (2022)

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Article Nanoscience & Nanotechnology

A new α plus β Ti-alloy with refined microstructures and enhanced mechanical properties in the as-cast state

Tianlong Zhang et al.

Summary: A new Ti-6Al-2V-1Cr-1Fe alloy with fine grain sizes, fine precipitates, high strength, and excellent ductility has been developed, showing significant improvements in properties compared to the commercial Ti-6Al-4V alloy. The alloying elements and tuning of supercooling capacity play key roles in achieving grain refinement and improved mechanical properties. This low-cost Ti alloy is expected to be highly suitable for various structural applications.

SCRIPTA MATERIALIA (2022)

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Article Materials Science, Multidisciplinary

Design of high strength and wear-resistance β-Ti alloy via oxygen-charging

Xiu-Qun Wang et al.

Summary: Titanium is a promising biomedical material due to its corrosion resistance, low elastic modulus, and biocompatibility. However, its inferior abrasion performance and strength-ductility trade-off limit its application as biomedical implants. Researchers have developed an oxygen-charging method to fabricate a beta-Ti alloy with ultrahigh surface hardness, strength, toughness, and wear resistance. The unique oxygen gradient distribution in the alloy contributes to its superior mechanical performance, resisting surface crack propagation and catastrophic failure.

ACTA MATERIALIA (2022)

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Article Nanoscience & Nanotechnology

Significantly enhanced tensile ductility and its origin of a ⟨0001⟩ micro-textured extrusion bar of a powder metallurgy near alpha titanium alloy

H. R. Zhang et al.

Summary: This study investigated the tensile properties and deformation mechanism of a hot-extruded powder metallurgy near alpha-Ti alloy characterized by a regular lamellar microstructure. The alloy's ultimate tensile strength (UTS) and equivalent elongation to fracture (EI) were improved by utilizing a unique micro-texture. Furthermore, annealing resulted in the formation of a bi-lamellar microstructure, enhancing the mechanical performance of the alloy.

SCRIPTA MATERIALIA (2022)

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Article Materials Science, Multidisciplinary

Ultrahigh yield strength and large uniform elongation achieved in ultrafine-grained titanium containing nitrogen

Yan Chong et al.

Summary: In this study, the influences of nitrogen content and grain size on the tensile properties and deformation behaviors of titanium at room temperature were systematically investigated. Ultrafine-grained (UFG) Ti-0.3 wt%N alloy with a fully recrystallized microstructure was obtained, exhibiting unprecedented ultrahigh yield strength and large uniform elongation. The hardening and strain-hardening mechanisms of Ti-0.3 wt%N alloy were comprehensively studied, revealing the dual contributions of nitrogen to the excellent strength/ductility balance in UFG Ti-0.3 wt%N.

ACTA MATERIALIA (2022)

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Article Chemistry, Multidisciplinary

Interface-Mediated Twinning-Induced Plasticity in a Fine Hexagonal Microstructure Generated by Additive Manufacturing

Pere Barriobero-Vila et al.

Summary: This study discovered the activation of deformation twinning in a fine-grained hcp microstructure by introducing ductile body-centered cubic (bcc) nano-layer interfaces. The fast solidification and cooling conditions of laser-based additive manufacturing, together with intensified intrinsic heat treatment, allowed for the creation of ductile nano-layered structures with the potential to improve the lifespan of hcp damage tolerant materials.

ADVANCED MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Slip-twinning interdependent activation across phase boundaries: An in-situ investigation of a Ti-Al-V-Fe (α plus β) alloy

Shaolou Wei et al.

Summary: Microstructural plastic strain distribution evolution is highly heterogeneous even in single-phase alloys. The transfer of slip/twinning across grain/phase boundaries plays a crucial role in governing this heterogeneity. Understanding of the fundamentals of transfer across grain boundaries has received significant attention, while knowledge about phase boundaries remains relatively limited.

ACTA MATERIALIA (2021)

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Article Multidisciplinary Sciences

Elimination of oxygen sensitivity in α-titanium by substitutional alloying with Al

Yan Chong et al.

Summary: Adding oxygen or aluminum individually can decrease the ductility of titanium alloys, especially at cryogenic temperatures. However, adding significant amounts of both Al and O can substantially improve both the strength and ductility of the alloy, with mechanisms involving their synergistic effects.

NATURE COMMUNICATIONS (2021)

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Letter Materials Science, Multidisciplinary

A kink-bands reinforced titanium alloy showing 1.3 Gpa compressive yield strenght: Towards extra high-strength/strain-transformation Ti alloys

Jinyong Zhang et al.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2021)

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Article Nanoscience & Nanotechnology

A unique three-stage dependence of yielding behavior and strain-hardening ability in Ti-10V-2Fe-3Al alloy on phase fraction

Yan Chong et al.

Summary: The study revealed a three-stage dependence of the tensile properties on the phase fraction in Ti-10V-2Fe-3Al alloy. Decreasing beta phase fraction led to enhanced beta phase stability and a transition from double-yielding to single-yielding behavior. Strain partitioning between the phases at intermediate phase fractions helped maintain reasonable strain-hardening ability.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2021)

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Article Multidisciplinary Sciences

Cryoforged nanotwinned titanium with ultrahigh strength and ductility

Shiteng Zhao et al.

Summary: Nanostructured metals are usually strong due to high internal boundary density, limiting dislocation mean free path, but also more brittle. Nanotwinned materials can overcome this trade-off. A new nanostructuring method enhances the strength and ductility of titanium.

SCIENCE (2021)

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Article Nanoscience & Nanotechnology

Tuning the morphology of Ti-5Al-5Mo-5V-3Cr-1Zr alloy: From brittle to ductile fracture

Pei Li et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2020)

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Article Materials Science, Multidisciplinary

Kink Formation Process in Long-Period Stacking Ordered Mg-Zn-Y Alloy

Shigeto Yamasaki et al.

ACTA MATERIALIA (2020)

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Article Materials Science, Multidisciplinary

Investigation on the Microstructure and Mechanical Properties of Ti-1.0Fe Alloy with Equiaxed alpha plus beta Microstructures

Yan Chong et al.

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE (2020)

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Article Multidisciplinary Sciences

Cooperative deformation in high-entropy alloys at ultralow temperatures

Muhammad Naeem et al.

SCIENCE ADVANCES (2020)

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Article Nanoscience & Nanotechnology

Tensile deformation of texture-controlled titanium with high oxygen content at room temperature

Motoaki Morita et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2020)

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Article Materials Science, Multidisciplinary

An in-situ study on deformation and cracking initiation in oxygen-doped commercial purity titanium

Jianghua Shen et al.

MECHANICS OF MATERIALS (2020)

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Article Materials Science, Multidisciplinary

Enhanced mechanical properties in β-Ti alloy aged from recrystallized ultrafine β grains

Bingjie Zhang et al.

MATERIALS & DESIGN (2020)

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Article Multidisciplinary Sciences

Mechanistic basis of oxygen sensitivity in titanium

Yan Chong et al.

SCIENCE ADVANCES (2020)

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Article Materials Science, Multidisciplinary

Perspective on hetero-deformation induced (HDI) hardening and back stress

Yuntian Zhu et al.

MATERIALS RESEARCH LETTERS (2019)

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Article Materials Science, Multidisciplinary

A novel high-strength β-Ti alloy with hierarchical distribution of α-phase: The superior combination of strength and ductility

Wenguang Zhu et al.

MATERIALS & DESIGN (2019)

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Article Materials Science, Multidisciplinary

Change in Slip Mode with Temperature in Ti-0.49 mass%O

Masaki Tanaka et al.

MATERIALS TRANSACTIONS (2019)

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Article Multidisciplinary Sciences

Additive manufacturing of ultrafine-grained high-strength titanium alloys

Duyao Zhang et al.

NATURE (2019)

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Article Materials Science, Multidisciplinary

Microstructure design and in-situ investigation of TRIP/TWIP effects in a forged dual-phase Ti-10V-2Fe-3Al alloy

Y. Danard et al.

MATERIALIA (2019)

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Article Nanoscience & Nanotechnology

Microstructural tailoring and mechanical properties of a multi-alloyed near beta titanium alloy Ti-5321 with various heat treatment

Lei Ren et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2018)

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Article Materials Science, Multidisciplinary

High Ductility in a fully martensitic microstructure: a paradox in a Ti alloy produced by selective laser melting

A. Zafari et al.

MATERIALS RESEARCH LETTERS (2018)

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Article Multidisciplinary Sciences

Enhanced strength and ductility in a high-entropy alloy via ordered oxygen complexes

Zhifeng Lei et al.

NATURE (2018)

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Article Chemistry, Physical

Microstructure and strengthening mechanism of ultrastrong and ductile Ti-xSn alloy processed by powder metallurgy

X. X. Ye et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2017)

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Article Multidisciplinary Sciences

High dislocation density-induced large ductility in deformed and partitioned steels

B. B. He et al.

SCIENCE (2017)

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Article Materials Science, Multidisciplinary

Formation of {11(2)over-bar1} twin boundaries in titanium by kinking mechanism through accumulative dislocation slip

Shenbao Jin et al.

ACTA MATERIALIA (2016)

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Article Nanoscience & Nanotechnology

Effects of oxygen concentration and temperature on deformation behavior of Ti-Nb-Zr-Ta-O alloys

Le Si Wei et al.

SCRIPTA MATERIALIA (2016)

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Article Materials Science, Multidisciplinary

State of the Art in Beta Titanium Alloys for Airframe Applications

James D. Cotton et al.

JOM (2015)

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Article Nanoscience & Nanotechnology

Microstructural evolution and strain-hardening behavior of multi-pass caliber-rolled Ti-13Nb-13Zr

Taekyung Lee et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2015)

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Review Multidisciplinary Sciences

On the mechanistic basis of deformation at the microscale in hexagonal close-packed metals

T. B. Britton et al.

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES (2015)

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Article Multidisciplinary Sciences

Origin of dramatic oxygen solute strengthening effect in titanium

Qian Yu et al.

SCIENCE (2015)

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Review Metallurgy & Metallurgical Engineering

Review of effect of oxygen on room temperature ductility of titanium and titanium alloys

M. Yan et al.

POWDER METALLURGY (2014)

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Article Materials Science, Multidisciplinary

Perspectives on Titanium Science and Technology

Dipankar Banerjee et al.

ACTA MATERIALIA (2013)

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Article Materials Science, Multidisciplinary

Design of a novel Mn-based 1 GPa duplex stainless TRIP steel with 60% ductility by a reduction of austenite stability

C. Herrera et al.

ACTA MATERIALIA (2011)

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Article Nanoscience & Nanotechnology

Nonlinear elastic deformation behaviour of Ti-30Nb-12Zr alloys

F. Q. Hou et al.

SCRIPTA MATERIALIA (2010)

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Article Materials Science, Multidisciplinary

Quick reference guide for β titanium alloys in the 00s

SL Nyakana et al.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2005)

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Article Materials Science, Multidisciplinary

Properties of TIMETAL 555 (Ti-5Al-5Mo-5V-3Cr-0.6Fe)

JC Fanning

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2005)

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Substantially strengthening a dual-phase titanium alloy by moderate oxygen doping

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