Hot Deformation Behavior and Processing Maps of a New Ti-6Al-2Nb-2Zr-0.4B Titanium Alloy

Yang, Zhinan; Yu, Wenbin; Lang, Shaoting; Jin, Wei; Wang, Guang-Long; Ding, Peng

doi:10.3390/ma14092456

Cited by 11 publications

(4 citation statements)

References 34 publications

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“…Microstructural evolution of materials during the hot deformation is analyzed by DMM in terms of the energy conversion. The DMM model can predict the processing property of materials and provide fundamental basis for the hot processing, which has been widely used in various alloys [ 34 , 35 , 36 ]. According to the DMM theory, the energy conversion in the hot deformation process of materials is composed of two parts, the dissipation quantity ( G ) and the dissipation coefficient ( J ).…”

Section: Resultsmentioning

confidence: 99%

Research on the Hot Deformation Behavior of the Casting NiTi Alloy

et al. 2021

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The hot deformation behavior and processing maps of the casting NiTi alloy were studied at the deformation temperature of 650–1050 °C and the strain rate of 5 × 10−3–1 s−1 by Gleeble-3800 thermal simulating tester. The variation of the strain rate sensitivity exponent m and the activation energy Q under different deformation conditions (T = 650–1050 °C, ε˙ = 0.005–1 s−1) were obtained. The formability of the NiTi alloy was the best from 800 °C to 950 °C. The constitutive equation of the casting NiTi alloy was constructed by the Arrhenius model. The processing map of the casting NiTi alloy was plotted according to the dynamic material model (DMM) based on the Prasad instability criterion. The optimal processing areas were at 800–950 °C and 0.005–0.05 s−1. The microstructure of the casting NiTi alloy was analyzed by TEM, SEM and EBSD. The softening mechanisms of the casting NiTi alloy were mainly dynamic recrystallization of the Ti2Ni phase and the nucleation and growth of fine martensite.

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Section: Resultsmentioning

confidence: 99%

Research on the Hot Deformation Behavior of the Casting NiTi Alloy

et al. 2021

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“…Most rare earth metals have hexagonal close-packed (HCP) structure and fewer slip systems; therefore, the plastic deformation is very difficult because the rolling deformation process can easily cause stress concentration and lead to cracking [10,11]. There is a lot of research involving magnesium [12][13][14] and magnesium alloy [15,16], and titanium [17,18] and titanium alloy [19][20][21], but there are few studies on the deformation of rare earth metal. Huang P. [22] studied the effects of annealing temperatures on the hardness and microstructure of high-purity metal scandium metal after hot forging, and obtained the optimum annealing process of 725 • C × 0.5 h. Wang S. [23] studied the effect of annealing temperature on the microstructure of high-purity Er target under 80% deformation after hot rolling and obtained the optimum annealing process of 570 • C × 1 h. However, hot deformation process can easily lead to target oxidation, serious loss of raw materials, and worse surface quality.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cold Rolling and Annealing on the Microstructure and Texture of Erbium Metal

Chen

Zhang

et al. 2022

Materials

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Erbium metal with purity ≥ 99% was cold rolled to 30%, 40%, 50%, and 60% deformations and the Er metal of 60% deformation was annealed at different temperatures for 1 h. The effect of cold rolling deformation and annealing on the microstructure and texture evolution of Er metal was investigated by XRD, EBSD, Microhardness tester, and OM. P is the orientation index, which is used to judge the preferred orientation. The research results showed that grains were broken and refined gradually with increasing deformation, the average grain size was 3.37 µm, and the orientation distribution was uniform for 60% deformation; deformation twins appeared in the grain when the deformation was less than 40%, which contributed to the generation of (0001) plane orientation. Comparing with the initial state, the (011−0) plane orientation gradually weakened and the (111−0) plane orientation had a trend of further strengthening with the increasing deformation; the (1−21−0) plane orientation remained unchanged, but there was a gradual weakening trend when the deformation was greater than 50%. For 60% deformation of Er metal, the deformed microstructure was replaced by fine equiaxed grains with the increasing annealing temperature, and the high-performance Er metal with fine and uniform equiaxed grains can be obtained under annealing at 740 °C for 1 h.

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“…Ti and Ti alloys have a high specific strength, low elastic modulus, good corrosion resistance, and excellent biocompatibility, and they have been widely used in aerospace, chemical, biomedical fields, etc. [ 1 , 2 , 3 , 4 ]. Pure Ti and Ti alloys are metal materials with good biocompatibility; they have been widely used in medicine [ 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties and Biocompatibility of Different Thickness (Pd/Fe)n Coatings Deposited on Pure Ti Surface via Multi Arc Ion Plating

Yang

Li²,

Liu

et al. 2022

Materials

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The different thickness (Fe/Pd)n coatings were prepared by vacuum ion plating technology on a pure Ti substrate. The (Fe/Pd)n coatings were magnetized using an MC-4000 high-pressure magnetizing machine. Then, the effect of the (Fe/Pd)n coating thickness on the magnetic properties was studied. The surface and section morphology, composition, phase structure, magnetic properties, and biocompatibility of the (Fe/Pd)n coatings were studied by scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, and CCTC-1 digital flux field measurement. The results showed that the (Fe/Pd)n coatings were granular, smooth, and compact, without cracks. In addition the (Fe/Pd)n coatings formed an L10 phase with a magnetic face-centered tetragonal-ordered structure after heat treatment. With the increase in the thickness of (FePd)n coatings, the content of L10 FePd phase increased and the remanence increased. The remanence values of the Fe/Pd, (Fe/Pd)5, (Fe/Pd)10, and (Fe/Pd)15 magnetic coatings were 0.83 Gs, 5.52 Gs, 7.14 Gs, and 7.94 Gs, respectively. Additionally, the (Fe/Pd)n magnetic coatings showed good blood compatibility and histocompatibility.

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Hot Deformation Behavior and Processing Maps of a New Ti-6Al-2Nb-2Zr-0.4B Titanium Alloy

Cited by 11 publications

References 34 publications

Research on the Hot Deformation Behavior of the Casting NiTi Alloy

Research on the Hot Deformation Behavior of the Casting NiTi Alloy

Effect of Cold Rolling and Annealing on the Microstructure and Texture of Erbium Metal

Magnetic Properties and Biocompatibility of Different Thickness (Pd/Fe)n Coatings Deposited on Pure Ti Surface via Multi Arc Ion Plating

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