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Effect of Restricted Multi-Directional Forging on the Microstructure and Properties of Ti2AlNb-Based Alloy AITranslate

XUE Ke-min; ZHI Qiang; DING Rui-dong; SHI Cheng-feng; YU Ren-hai; LI Ping
School of Materials Science and Engineering,Hefei University of Technology;School of Materials Science and Engineering,Hefei University of Technology;School of Materials Science and Engineering,Hefei University of Technology;School of Materials Science and Engineering,Hefei University of Technology;School of Materials Science and Engineering,Hefei University of Technology;School of Materials Science and Engineering,Hefei University of Technology
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

Ti2AlNb-based alloy was subjected to three passes of isothermally restricted multi-directional forging(R-MDF) in the B2+O phase region.The microstructure of the deformed alloy samples was analyzed using metallographic microscope,X-ray diffractometer,scanning electron microscope,and transmission electron microscope.Quantitative analysis of the total volume fraction of O phase,width and volume fraction of lamellar O phase,and size of equiaxed O phase in each pass of multi-directional forging was conducted using Image software,aiming to study the deformation behavior of O phase in different passes.Vickers hardness test was conducted on Ti2AlNb-based alloy samples in different passes to reveal the relationship between microstructure and microhardness after multi-directional forging.The research results show that after deformation,coarse lamellar O phase fragments and refines into equiaxed O phase.After different passes of multi-directional forging,the size of equiaxed O phase initially increases from 0.57 μm in the first pass to 1.24 μm in the second pass and then gradually decreases,reaching an average size of approximately 0.84 μm after the third pass.Compared with the initial sample,the microhardness of the samples in each pass increases by approximately 15.4%,22.2%,and 14.8%,respectively.

KeyWords AITranslate

Ti2AlNb isothermally restricted multi-directional forging microstructure microhardness

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DOI：

Chinese Library Classification Number:TG146.416[金属学及工艺—金属材料]

Citation Information:

Ti2AlNb-based alloy was subjected to three passes of isothermally restricted multi-directional forging(R-MDF) in the B2+O phase region.The microstructure of the deformed alloy samples was analyzed using metallographic microscope,X-ray diffractometer,scanning electron microscope,and transmission electron microscope.Quantitative analysis of the total volume fraction of O phase,width and volume fraction of lamellar O phase,and size of equiaxed O phase in each pass of multi-directional forging was conducted using Image software,aiming to study the deformation behavior of O phase in different passes.Vickers hardness test was conducted on Ti2AlNb-based alloy samples in different passes to reveal the relationship between microstructure and microhardness after multi-directional forging.The research results show that after deformation,coarse lamellar O phase fragments and refines into equiaxed O phase.After different passes of multi-directional forging,the size of equiaxed O phase initially increases from 0.57 μm in the first pass to 1.24 μm in the second pass and then gradually decreases,reaching an average size of approximately 0.84 μm after the third pass.Compared with the initial sample,the microhardness of the samples in each pass increases by approximately 15.4%,22.2%,and 14.8%,respectively.

quote

GB/T 7714-2015 [1] XUE Ke-min, ZHI Qiang, DING Rui-dong, et al. Effect of Restricted Multi-Directional Forging on the Microstructure and Properties of Ti2AlNb-Based Alloy[J]. Rare Metals and Cemented Carbides, 2024(3): 66-71.
MLA [1] XUE Ke-min, et al., "Effect of Restricted Multi-Directional Forging on the Microstructure and Properties of Ti2AlNb-Based Alloy." Rare Metals and Cemented Carbides, no. 3, 2024, pp. 66-71.
APA [1] XUE Ke-min, ZHI Qiang, DING Rui-dong, SHI Cheng-feng, YU Ren-hai, & LI Ping. (2024). Effect of Restricted Multi-Directional Forging on the Microstructure and Properties of Ti2AlNb-Based Alloy. Rare Metals and Cemented Carbides(3), 66-71.
IEEE [1] XUE Ke-min, ZHI Qiang, DING Rui-dong, SHI Cheng-feng, YU Ren-hai, and LI Ping, "Effect of Restricted Multi-Directional Forging on the Microstructure and Properties of Ti2AlNb-Based Alloy," Rare Metals and Cemented Carbides, no. 3, pp. 66-71, 2024. keywords: {TiAlNb;isothermally restricted multi-directional forging;microstructure;microhardness}