The Formation of Strong {100} Texture by Dynamic Strain-Induced Boundary Migration in Hot Compressed Ti-5Al-5Mo-5V-1Cr-1Fe Alloy

Li, Kai; Yang, Ping

doi:10.3390/met7100412

Cited by 39 publications

(20 citation statements)

References 18 publications

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“…It is obvious from Figure 5b that the deformed β phase presents a 〈100〉‐〈111〉 double fiber texture. Such a double fiber texture is commonly discovered in the metals with a body‐centered cubic structure under hot compression process . Figure 5c shows the IPF map of the transformed α phase, in which the α phase presents a highly preferential orientation distribution.…”

Section: Resultsmentioning

confidence: 70%

Effect of Deformation Temperature on the Microstructure Characteristics of α Phase in Ti‐40Al‐8Nb‐0.5B Alloys

Yang

Wang

et al. 2020

Crystal Research and Technology

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In this work, microstructure characteristics of α phase in Ti‐40Al‐8Nb‐0.5B alloys (at%) after deformation in the β and (β+α) phase regions are examined. The experimental results indicate that the microstructure characteristics of the α phase are considerably affected by the deformation temperature. During the deformation in the β phase area, the β phase is not only elongated perpendicular to the compression direction, but also presents a 〈100〉‐〈111〉 double fiber texture. After the β→α transformation, a part of the α phase exhibits an equiaxed morphology and the others show lath‐like shapes. Due to the microstructural heredity, the α phase of the sample deformed in the β phase field presents a 〈11‐20〉‐〈10‐10〉 double fiber texture. In contrast, refined α phase with randomly distributed orientation is produced after the deformation in the (β+α) phase field and this is caused by the dynamic recrystallization during the deformation process.

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Section: Resultsmentioning

confidence: 70%

Effect of Deformation Temperature on the Microstructure Characteristics of α Phase in Ti‐40Al‐8Nb‐0.5B Alloys

Yang

Wang

et al. 2020

Crystal Research and Technology

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“…The high rolling temperature and low deformation ratio resulted in full recrystallization and grain growth for the Fe-6.5 wt. % Si alloy in the finish rolling stage, which made the γ fiber content weaken slightly [29,30].…”

Section: Texture Evolutionmentioning

confidence: 99%

Fabrication Technology and Material Characterization of Hot Rolled Cylindrical Fe-6.5 wt. % Si Bars

Wen

Xue

Han

et al. 2018

Metals

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Cylindrical Fe-6.5 wt. % Si bars of 7.5 mm diameter were successfully fabricated from an as-cast ingot through three rolling stages, with 10 total passes: rough rolling at 850-900 • C and 8-10 m/min; medium rolling at 800-850 • C and 10-15 m/min; finish rolling at 800-850 • C and 12-18 m/min. The evolution of the microstructure, texture, and ordered structure were studied, and the mechanical properties were investigated. Results indicated that the grains were refined by the hot bar rolling. Area fractions of the {100}<011> and {011}<100> oriented grains decreased to 0 during hot bar rolling, whereas the {100}<001>, {011}<211>, and {112}<110> components increased. Furthermore, the γ fiber with {111}<110> component was dominant. After the hot bar rolling, the DO 3 ordered phase was suppressed, and the B2 ordered domains were refined. Ductility of the as-rolled bar was better than that of the rotary-swaged bar, due to the absence of the DO 3 ordered phase, and refinement of the grains in the rolled bar. Moreover, discontinuous dynamic recrystallization (DDRX) occurred at a high deformation rate during the rough rolling, and continuous dynamic recrystallization (CDRX) appeared at a low strain rate during the finish rolling. Hence, hot bar rolling technology is an excellent process for the fabrication of Fe-6.5 wt. % Si bars.

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“…Note that at 2 s −1 , the initially ultra-large β grains are significantly elongated perpendicular to the compression direction (CD), which produces a strong <100>//CD fiber and a weak <111>//CD fiber. Such texture components are quite common in hot-compressed body-centered cubic (BCC) alloys, such as Fe-Si [16] and β-titanium alloys [17]. Detailed IPF map ( Figure 3) shows that there are a number of small DRXed grains being produced along the elongated and serrate grain boundaries (GBs), by means of a GB bowing mechanism.…”

Section: β Matrix Evolutionmentioning

confidence: 99%

Deformation Behavior of a β-Solidifying TiAl Alloy within β Phase Field and Its Effect on the β→α Transformation

Chen

Liu

Yang

et al. 2018

Metals

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In this study, the deformation behavior of a Ti-40Al-10V (at.%) alloy within β single phase field was examined by means of isothermal compression at 1300 °C under strain rates of 2 s−1, 0.2 s−1, and 0.02 s−1, as well as its effect on the subsequent β→α transformation. The results showed that the alloy behaved steady-state flow with dislocation creep as the predominant rate-controlling process. Dynamic recrystallization (DRX) evidently occurred during deformation, and its volume fraction was dramatically increased so that at the lowest strain rate (0.02 s−1), a full-DRX β structure was obtained. The preferentially dynamic migration of grain boundaries with <100> orientation was demonstrated to be the major DRX mechanism. The texture was characterized by a <100> + <111> double-fiber at 2 s−1, but gradually transformed into a simple rotated cube orientationunder 0.02 s−1, accompanied by a decreasing texture intensity. During the subsequent β→α transformation, two types of α morphology wereproduced with evident variant selection, namely, the Widmannstatten colony and martensitic laths. Texture simulation revealed that the α texture was solely determined by parent β texture, despite of the variant selections.

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The Formation of Strong {100} Texture by Dynamic Strain-Induced Boundary Migration in Hot Compressed Ti-5Al-5Mo-5V-1Cr-1Fe Alloy

Cited by 39 publications

References 18 publications

Effect of Deformation Temperature on the Microstructure Characteristics of α Phase in Ti‐40Al‐8Nb‐0.5B Alloys

Effect of Deformation Temperature on the Microstructure Characteristics of α Phase in Ti‐40Al‐8Nb‐0.5B Alloys

Fabrication Technology and Material Characterization of Hot Rolled Cylindrical Fe-6.5 wt. % Si Bars

Deformation Behavior of a β-Solidifying TiAl Alloy within β Phase Field and Its Effect on the β→α Transformation

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