Dislocation Evolution Analysis of TA15 Titanium Alloy during Hot Compression Deformation AITranslate
Abstract AITranslate
Some isothermal constant speed compression tests on TA15 titanium alloys were carried out by Gleeble-3500 thermal simulator,the dislocation evolution of TA15 titanium alloy during hot compression deformation was analyzed by materials analysis and testing techniques（XRD and TEM）and related quantitative calculation theory（XRD linear Fourier analysis method）.The results show that the primary dislocations consist of（1010）,（0002）,（1011）and（110）βtypes in deformed TA15 titanium alloy during hot compression deformation,and the dislocation density is in the range of 1013-10^14 cm^-2.When deformation temperature is 950 ℃ and deformation degree is 40%,the dislocation density of（1010）and（110）βtypes is almost unchanged with strain rate increasing.The dislocation density of all types decreases with strain rate increasing at deformation degree of 60%.When strain rate is 1s-1,the average lattice strain and dislocation density decrease with deformation degree increasing.The lattice strain drops to 0.116%-0.138%,and the dislocation density drops to（1.1-1.7）×10^14 cm^-2 at deformation degree of 60%.Microscopic deformation bands and dislocation cell are developed by dislocation in（α＋β）two-phase region.However,the dislocation density is very low in lath martensiteα＇phase to form dislocation pile group,and then highly concentrated stress is formed between dislocation pile group and martensiteα＇phase inβsingle-phase region.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.23[金属学及工艺—金属材料]
Citation Information:
Some isothermal constant speed compression tests on TA15 titanium alloys were carried out by Gleeble-3500 thermal simulator,the dislocation evolution of TA15 titanium alloy during hot compression deformation was analyzed by materials analysis and testing techniques（XRD and TEM）and related quantitative calculation theory（XRD linear Fourier analysis method）.The results show that the primary dislocations consist of（1010）,（0002）,（1011）and（110）βtypes in deformed TA15 titanium alloy during hot compression deformation,and the dislocation density is in the range of 1013-10^14 cm^-2.When deformation temperature is 950 ℃ and deformation degree is 40%,the dislocation density of（1010）and（110）βtypes is almost unchanged with strain rate increasing.The dislocation density of all types decreases with strain rate increasing at deformation degree of 60%.When strain rate is 1s-1,the average lattice strain and dislocation density decrease with deformation degree increasing.The lattice strain drops to 0.116%-0.138%,and the dislocation density drops to（1.1-1.7）×10^14 cm^-2 at deformation degree of 60%.Microscopic deformation bands and dislocation cell are developed by dislocation in（α＋β）two-phase region.However,the dislocation density is very low in lath martensiteα＇phase to form dislocation pile group,and then highly concentrated stress is formed between dislocation pile group and martensiteα＇phase inβsingle-phase region.
quote
| GB/T 7714-2015 | [1] DING Yong-gen, SUN Jian-hui, LI Ping, et al. Dislocation Evolution Analysis of TA15 Titanium Alloy during Hot Compression Deformation[J]. Rare Metals and Cemented Carbides, 2017(1): 58-62. |
| MLA | [1] DING Yong-gen, et al., "Dislocation Evolution Analysis of TA15 Titanium Alloy during Hot Compression Deformation." Rare Metals and Cemented Carbides, no. 1, 2017, pp. 58-62. |
| APA | [1] DING Yong-gen, SUN Jian-hui, LI Ping, WEN Yao, & XUE Ke-min. (2017). Dislocation Evolution Analysis of TA15 Titanium Alloy during Hot Compression Deformation. Rare Metals and Cemented Carbides(1), 58-62. |
| IEEE | [1] DING Yong-gen, SUN Jian-hui, LI Ping, WEN Yao, and XUE Ke-min, "Dislocation Evolution Analysis of TA15 Titanium Alloy during Hot Compression Deformation," Rare Metals and Cemented Carbides, no. 1, pp. 58-62, 2017. keywords: {TA15 titanium alloy;dislocation evolution;lattice strain;microscopic deformation band;dislocation pile group} |