Transformation of Coherent Twin Boundary into Basal-Prismatic Boundary in HCP-Ti: A Molecular Dynamics Study
文献类型：期刊论文
| 作者 | Sun, Tao1; Bao, Qili2; Gao, Yang1; Li, Shujun2; Li, Jianping1; Wang, Hao3 |
| 刊名 | MATERIALS
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 17期号:9页码:11 |
| 关键词 | titanium grain boundary dislocation plastic deformation molecular dynamics |
| DOI | 10.3390/ma17092165 |
| 通讯作者 | Sun, Tao(suntao@mail.neu.edu.cn) ; Wang, Hao(haowang7@usst.edu.cn) |
| 英文摘要 | The manufacturing process for wrought Ti alloys with the hexagonal close-packed (HCP) structure introduces a complicated microstructure with abundant intra- and inter-grain boundaries, which greatly influence performance. In the hexagonal close-packed (HCP) structure, two types of grain boundaries are commonly observed between grains with similar to 90 degrees misorientation: the basal/prismatic boundary (BPB) and the coherent twin boundary (CTB). The mechanical response of the BPB and CTB under external loading was studied through molecular dynamic simulations of HCP-Ti. The results revealed that CTB undergoes transformation into BPB through the accumulation of twin boundary (TB) steps and subsequent emission of Shockley partial dislocations. When the total mismatch vector is close to the Burgers vector of a Shockley partial dislocation, BPB emits partial dislocations and further grows along the stacking faults. When a pair of CTBs are close to each other, severe boundary distortion occurs, facilitating the emission and absorption of partial dislocations, which further assists the CTB-BPB transformation. The present results thus help to explain the frequent observation of coexisting CTB and BPB in HCP alloys and further contribute to the understanding of their microstructure and property regulation. |
| 资助项目 | National Natural Science Foundation of China |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001220681200001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Sun, Tao; Wang, Hao |
| 作者单位 | 1.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Shanghai Sci & Technol, Interdisciplinary Ctr Addit Mfg ICAM, Sch Mat & Chem, Shanghai 200093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Tao,Bao, Qili,Gao, Yang,et al. Transformation of Coherent Twin Boundary into Basal-Prismatic Boundary in HCP-Ti: A Molecular Dynamics Study[J]. MATERIALS,2024,17(9):11. |
| APA | Sun, Tao,Bao, Qili,Gao, Yang,Li, Shujun,Li, Jianping,&Wang, Hao.(2024).Transformation of Coherent Twin Boundary into Basal-Prismatic Boundary in HCP-Ti: A Molecular Dynamics Study.MATERIALS,17(9),11. |
| MLA | Sun, Tao,et al."Transformation of Coherent Twin Boundary into Basal-Prismatic Boundary in HCP-Ti: A Molecular Dynamics Study".MATERIALS 17.9(2024):11. |
入库方式： OAI收割
来源：金属研究所
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