[보고서]보론 개량화된 베타계 타이타늄합금의 미세조직변화와 강화 메카니즘 연구

박노광

보고서 정보

주관연구기관

한국기계연구원
Korea Institute of Machinery and Materials

연구책임자

박노광

참여연구자

임가람 , Xujun Mi

보고서유형

3단계보고서

발행국가

대한민국

언어

한국어

발행년월

2016-03

과제시작연도

2015

주관부처

미래창조과학부
Ministry of Science, ICT and Future Planning

등록번호

TRKO201800007893

과제고유번호

1711029951

사업명

국가간협력기반조성

DB 구축일자

2018-05-19

키워드

베타 타이타늄.보론.고강도.미세조직 변화.기계적물성.Beta titanium.Boron.High strength.Microstructure evolution.Mechanical properties.

DOI

https://doi.org/10.23000/TRKO201800007893

표 Ti-12.1Mo-1Fe(0A1F)의 화학조성
표 Ti-2Al-9.2Mo-2Fe-xB(2A2F)의 화학조성
표 Microstructures of (a-c) 0A1F, (d-f) 0A1F-0.1B and (a),(d) Solution treated at 750℃ for 1hr, (b),(e) Solution treated at 760℃ for 1hr, (c),(f) solution treated at 770℃ for 1hr.
표 Microstructures of (a) 0A1F, (b) 0A1F-0.1B, Solution treated at 810℃ for 1hr.
표 Grain Size Measurement.
표 Microstructures of (a),(b) 0A1F, (c),(d) 0A1F-0.1B, aged at 350℃ and 450℃ for 1hr respectively.
표 Microstructures of (a),(b),(c) 0A1F, (d),(e),(f) 0A1F-0.1B, aged at 550℃ for 15min, 1hr, 4hr respectively.
표 Schematic Pseudo-Binary Section Through a β Isomorphous Phase Diagram
표 Calculated values for the Molybdenum equivalent and electron/atom (e/a) ration and bond order (Bo), metal d-orbital (Md) by the analyzed chemical compositions.
$XRD Diffraction Profiles of solution treated at 810℃ for 1hr.$ 표 XRD Diffraction Profiles of solution treated at 810℃ for 1hr.
$XRD Diffraction Profiles of (a) 0A1F, (b) 0A1F-0.1B, solution treated at 810℃ for 1hr, and aged 350℃.$ 표 XRD Diffraction Profiles of (a) 0A1F, (b) 0A1F-0.1B, solution treated at 810℃ for 1hr, and aged 350℃.
$XRD Diffraction Profiles of (a) 0A1F, (b) 0A1F-0.1B, solution treated at 810℃ for 1hr, and aged 450℃.$ 표 XRD Diffraction Profiles of (a) 0A1F, (b) 0A1F-0.1B, solution treated at 810℃ for 1hr, and aged 450℃.
$XRD Diffraction Profiles of (a) 0A1F, (b) 0A1F-0.1B, solution treated at 810℃ for 1hr, and aged 550℃.$ 표 XRD Diffraction Profiles of (a) 0A1F, (b) 0A1F-0.1B, solution treated at 810℃ for 1hr, and aged 550℃.
표 Vickers hardness after solution treated at 810℃ for 1hr, and aged 35 0℃, 450℃, 550℃. (a) 0A1F (b) 0A1F-0.1B.
표 Tensile properties of the 0A1F, 0A1F-0.1B alloys after the solution treatment and aging.
표 Stress-strain curves of the alloys after solution treated at 810℃ for 1hr.
표 Changes in the deformation mode about e/a ratio and Mo equivalency (Mo Eq.) in alloys.
표 Stress-strain curves of the alloys: (a) aged at 350℃ for 1hr, (b) aged at 450℃ for 1hr, (c) aged at 550℃ for 1hr.
표 Stress-strain curves of the alloys : (a) aged at 550℃ for 15min, (b) aged at 550℃ for 1hr, (c) aged at 550℃ for 4hr.
표 Microstructures of 790℃ 30min Water Quenched (a) B-free (b) 0.05B
표 Grain Size Measurement of below β transus solution treated 2A2F alloys.
표 Microstructures of 850℃ 30min Water Quenched (a) B-free (b) 0.05B added (c) 0.1B added 2A2F alloy.
표 Grain Size Measurement of above β transus solution treated 2A2F alloys.
표 Microstructures of 790℃ 30min Water Quenched & 450℃ 1hr Water Quenched (a) B-free (b) 0.05B added (c) 0.1B added 2A2F alloy.
표 Microstructures of 790℃ 30min Water Quenched & 550℃ 1hr Water Quenched (a) B-free (b) 0.05B added (c) 0.1B added 2A2F .
표 Microstructures of 790℃ 30min Water Quenched & 650℃ 1hr Water Quenched (a) B-free (b) 0.05B added (c) 0.1B added 2A2F alloy.
표 Microstructures of 850℃ 30min Water Quenched & 450℃ 1hr Water Quenched (a) B-free (b) 0.05B added (c) 0.1B added 2A2F alloy.
표 Microstructures of 850℃ 30min Water Quenched & 550℃ 1hr Water Quenched (a) B-free (b) 0.05B added (c) 0.1B added 2A2F alloy.
표 Microstructures of 850℃ 30min Water Quenched & 650℃ 1hr Water Quenched (a) B-free (b) 0.05B added (c) 0.1B added 2A2F alloy.
$X-Ray Diffraction Profiles of (a) 790℃ 30min Water Quenched (b) 850℃ 30min Water Quenched 2A2F alloys.$ 표 X-Ray Diffraction Profiles of (a) 790℃ 30min Water Quenched (b) 850℃ 30min Water Quenched 2A2F alloys.
$X-Ray Diffraction Profiles of (a) 450℃ (b) 550℃ (c) 650℃ 1hr Water Quenched after 790℃ 30min Water Quenched 2A2F alloys.$ 표 X-Ray Diffraction Profiles of (a) 450℃ (b) 550℃ (c) 650℃ 1hr Water Quenched after 790℃ 30min Water Quenched 2A2F alloys.
$X-Ray Diffraction Profiles of (a) 450℃ (b) 550℃ (c) 650℃ 1hr Water Quenched after 850℃ 30min Water Quenched 2A2F alloys.$ 표 X-Ray Diffraction Profiles of (a) 450℃ (b) 550℃ (c) 650℃ 1hr Water Quenched after 850℃ 30min Water Quenched 2A2F alloys.
표 Tensile properties of boron-modified 2A2F alloys with below β transus solution treatment + several aging treatments.
표 (a) Yield Strength (b) Ultimate Tensile Strength (c) Elongation of 850℃ 30min Water Quenched & 450/550/650℃ 1hr Water Quenched 2A2F
표 Tensile properties of boron-modified 2A2F alloys with above β transus solution treatment + several aging treatments.
표 The application of beta titanium alloy in automotive
표 The cost of titanium alloy product
표 The TiB/Ti-MMC automotive components in Toyota Altezza
표 “T” section extrusions of Ti-62S-0.6B alloy
표 Ti-B binary phase diagram
표 Different reactions in the Ti-B system
표 Free energy of formation of TiB and TiB2
표 Crystal structures and lattice parameters of Ti-B system
표 Crystal structures of TiB and TiB2
표 Alloy-Composition classification
표 Schematic showing various deformation mechanisms that operates at different regimes of experimental temperature–strain rate conditions for Ti64 (left) and Ti64 + 0.1wt.%B (right) alloys
표 Schematic of dynamic recrystallization in (a) large grain size and (b) fine grain size
표 Schematic of alpha phase nucleate and grow along TiB phase in [010]TiB direction
표 Typical Tensile Properties of the Ti-2Al-9.2Mo-2Fe Alloy after different heat treatments
표 The chemical compositions of as present alloys
표 The Schematic plot of sample cutting
표 Calculated ∙  values for elements in titanium. 
표 Variation of cast grain size with boron concentration
표 The chemical compositions of both alloys
표 Macrostructures in T section of (a) 2A2F, (b) 2A2F10B in as-cast condition
표 Macrostructures in L section of (a) 2A2F, (b) 2A2F10B in as-cast condition
표 Microstructures in T section of 2A2F in as-cast condition.
표 Microstructures in T section of 2A2F10B in as-cast condition.
표 The grain size of different position of both alloys ingot at as-cast condition.
표 SEM micrograph of as-cast 2A2F10B alloy at different position: (a, b) A position in Fig.3.5, (c, d) B position in Fig.3.5, (e, f) C position in Fig.3.5 R/2.
표 TEM images and SAD patterns of the particles with beta matrix. And the chemical of particle are tested by EDS.
표 Orientation map of the microstructure of 2A2F20B alloy at as-cast condition.
표 Pole figures of TiB, Beta1 and Beta2 at different crystal planes
표 Schematic illustration of solidification in 2A2F10B alloy.
표 The chemical compositions of the manufactured the selected alloys
표 Initial microstructure of the solution treated (a) 2A2F and (b) 2A2F10B alloys revealed by EBSD
표 The microstructure of TiB particles (white phase) and beta grains in solution treated 2A2F10B alloy
표 Curves of true stress-strain for 2A2F and 2A2F10B alloys under all different conditions
표 Work-hardening variation ((-∂θ/∂σ) – σ) curves of both alloy under different deformation conditions (a) 0.01/s and (b) 0.1/s of 2A2F alloy, (c) 0.01/s and (d) 10/s of 2A2F10B alloy.
표 Relationship between lnZ and ln[sinh(ασ)] of both alloys
표 Orientation map of 2A2F alloy microstructure after hot compression under different conditions
표 Orientation map of 2A2F10B alloy microstructure after hot compression under different conditions
표 Microstructures with boundary of 2A2F10B alloy after deformed under a lower strain rate of 0.01/s at various temperatures
표 Microstructures with boundary of 2A2F10B alloy after deformed under a higher strain rate of 10/s at various temperatures
표 the relationship between recrystallization grains and TiB particles (grey zone): (a) A zone of Fig.10, (b) B zone of Fig.10, (c) C zone of Fig.10. The TiB particles of (a), (b) are in the initial grain interiors, TiB particles of (c) are in the grain boundary.
표 the misorientation profiles along directions AB as indicated in Fig.4.11.
표 the TEM microstructure of the sub-grain and dynamic recrystallized grain which surround TiB particles.
표 The chemical compositions of the manufactured three alloys
표 Heat treatment of the grain growth research
표 As-rolled bar’s microstructures of these alloys
표 optical micrographs of each alloy after different solution treatments
$X-ray diffraction profiles of each alloys after solution treatment$ 표 X-ray diffraction profiles of each alloys after solution treatment
표 Increase of beta grain size in relation to solution time in beta phase at different temperatures of each alloys
표 Linear Relationship between InD and Int for the grain growth of each alloy
표 The grain growth exponent (n) for each alloys at different temperature
표 Schematic illustration of the two cases of interaction between a boundary
표 Theory and Experiment Maximum grain size by Zener pinning vs Aspect ratio
표 The interaction between TiB and Grain boundary
표 XRD Profiles of the 2A2F, 2A2F05B and 2A2F10B alloys Solution Treated at 750 ˚C Followed by FC, AC and WQ
표 Microstructures of the 2A2F,2A2F05B and 2A2F10B alloys Solution Treated at 750°C Followed by FC,AC and WQ
표 XRD Profiles of the 2A2F, 2A2F05B and 2A2F10B alloys Solution Treated at 850˚C Followed by FC,AC and WQ
표 Microstructures of the 2A2F, 2A2F05B and 2A2F10B alloys Solution Treated at 850 ˚C Followed by FC,AC and WQ
$X-ray diffraction profiles of 2A2F and 2A2F10B alloys after aging at$ 표 X-ray diffraction profiles of 2A2F and 2A2F10B alloys after aging at
표 Microstructures of 2A2F10B alloy after aging at 400 ˚C for different times
표 Microstructures of solution treated 2A2F and 2A2F10B alloys aging at 450 ˚C for different times
표 Microstructures of solution treated 2A2F and 2A2F10B alloys aging at 500 ˚C for different times
$X-ray diffraction profiles of 2A2F and 2A2F10B alloys after aging at$ 표 X-ray diffraction profiles of 2A2F and 2A2F10B alloys after aging at
$X-ray diffraction profiles of 2A2F10B alloys after aging at$ 표 X-ray diffraction profiles of 2A2F10B alloys after aging at
표 Microstructures of solution treated 2A2F and 2A2F10B alloys aging at 550 ˚C for different times
표 Microstructures of solution treated 2A2F and 2A2F10B alloys aging at 600 ˚C for different times
표 Microstructures of solution treated 2A2F and 2A2F10B alloys aging at 650 ˚C for different times
표 Microstructures of solution treated 2A2F and 2A2F10B alloys aging at 700 ˚C for different times
$X-ray diffraction profiles of 2A2F and 2A2F10B alloys after aging at$ 표 X-ray diffraction profiles of 2A2F and 2A2F10B alloys after aging at
표 Microstructures of 2A2F and 2A2F10B alloys aging at 400 ˚C for different times
표 Microstructures of 2A2F and 2A2F10B alloys aging at 450˚C for different times
표 Microstructures of 2A2F and 2A2F10B alloys aging at 500 ˚C for different times
표 Microstructure of the 2A2F10B alloy aged at
표 Microstructures of 2A2F and 2A2F10B alloys aging at 650 ˚C for different times
표 Microstructures of 2A2F and 2A2F10B alloys aging at 700 ˚C for different times
표 Heat Treatment Route for the Microstructure-Property Relationship Study
표 the Vickers hardness of 2A2F10B alloys after aging at low temperatures for different times
표 the Vickers hardness of 2A2F alloys after aging at low temperatures for different times
표 the Vickers hardness of 2A2F10B alloys after directly aging at different temperatures for different times
표 the Vickers hardness of 2A2F alloys after directly aging at different temperatures for different times
표 Effect of solution time at different temperature (a) 850°C, (b) 1000°C on tensile properties (UTS, YS and El) of various solution treated 2A2F, 2A2F05B and 2A2F10B alloy.
표 Tensile properties vs. beta grain size for boron-contained alloys: (a) 0.2% Yield strength, (b) Elongation
표 SEM images of the alloy solution treated at 850°C and aged at (a) 500°C, (b) 550°C, (c) 600°C and (d) 650°C for 2h.
표 Tensile properties of 2A2F and 2A2F10B alloys solution treated at 850°C and aged at different temperatures for 2h
$Microstructures taken from the region neat the fracture of the tensile deformed specimens under different heat treatment$ 표 Microstructures taken from the region neat the fracture of the tensile deformed specimens under different heat treatment
표 Microstructures of 2A2F10 alloy after different heat treatment
표 properties of 2A2F10B alloy after STA and DA treatment

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보론 개량화된 베타계 타이타늄합금의 미세조직변화와 강화 메카니즘 연구
Microstructure Evolution in Boron Modified Beta Titanium Alloy 원문보기

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보론 개량화된 베타계 타이타늄합금의 미세조직변화와 강화 메카니즘 연구 Microstructure Evolution in Boron Modified Beta Titanium Alloy 원문보기

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보론 개량화된 베타계 타이타늄합금의 미세조직변화와 강화 메카니즘 연구
Microstructure Evolution in Boron Modified Beta Titanium Alloy 원문보기

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