Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion
In situ synthesized TiB whiskers (TiBw) reinforced Ti-15Mo-3Al-2.7Nb-0.2Si alloys were successfully manufactured by pre-sintering and canned hot extrusion via adding TiB<sub>2</sub> powders. During pre-sintering, most TiB<sub>2</sub> were reacted with Ti atoms to produce TiB....
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-01-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/10/1/126 |
| id |
doaj-58139f2da773485ca73bd0118a3d4f5a |
|---|---|
| record_format |
Article |
| spelling |
doaj-58139f2da773485ca73bd0118a3d4f5a2020-11-25T02:05:54ZengMDPI AGMetals2075-47012020-01-0110112610.3390/met10010126met10010126Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot ExtrusionJiabin Hou0Lin Gao1Guorong Cui2Wenzhen Chen3Wencong Zhang4Wenguang Tian5School of Materials Science and Engineering, Harbin Institute of Technology, Weihai 264209, ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Weihai 264209, ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Weihai 264209, ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Weihai 264209, ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Weihai 264209, ChinaOriental Bluesky Titanium Technology Co., LTD, Yantai 264003, ChinaIn situ synthesized TiB whiskers (TiBw) reinforced Ti-15Mo-3Al-2.7Nb-0.2Si alloys were successfully manufactured by pre-sintering and canned hot extrusion via adding TiB<sub>2</sub> powders. During pre-sintering, most TiB<sub>2</sub> were reacted with Ti atoms to produce TiB. During extrusion, the continuous dynamic recrystallization (CDRX) of β grains was promoted with the rotation of TiBw, and CDRXed grains were strongly inhibited by TiBw with hindering dislocation motion. Eventually, the grain sizes of composites decreased obviously. Furthermore, the stress transmitted from the matrix to TiBw for strengthening in a tensile test, besides grain refinement. Meanwhile, the fractured TiBw and microcracks around them contributed to fracturing.https://www.mdpi.com/2075-4701/10/1/126tib whiskersdynamic recrystallizationgrain refinementstrengthening |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Jiabin Hou Lin Gao Guorong Cui Wenzhen Chen Wencong Zhang Wenguang Tian |
| spellingShingle |
Jiabin Hou Lin Gao Guorong Cui Wenzhen Chen Wencong Zhang Wenguang Tian Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion Metals tib whiskers dynamic recrystallization grain refinement strengthening |
| author_facet |
Jiabin Hou Lin Gao Guorong Cui Wenzhen Chen Wencong Zhang Wenguang Tian |
| author_sort |
Jiabin Hou |
| title |
Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion |
| title_short |
Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion |
| title_full |
Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion |
| title_fullStr |
Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion |
| title_full_unstemmed |
Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion |
| title_sort |
grain refinement of ti-15mo-3al-2.7nb-0.2si alloy with the rotation of tib whiskers by powder metallurgy and canned hot extrusion |
| publisher |
MDPI AG |
| series |
Metals |
| issn |
2075-4701 |
| publishDate |
2020-01-01 |
| description |
In situ synthesized TiB whiskers (TiBw) reinforced Ti-15Mo-3Al-2.7Nb-0.2Si alloys were successfully manufactured by pre-sintering and canned hot extrusion via adding TiB<sub>2</sub> powders. During pre-sintering, most TiB<sub>2</sub> were reacted with Ti atoms to produce TiB. During extrusion, the continuous dynamic recrystallization (CDRX) of β grains was promoted with the rotation of TiBw, and CDRXed grains were strongly inhibited by TiBw with hindering dislocation motion. Eventually, the grain sizes of composites decreased obviously. Furthermore, the stress transmitted from the matrix to TiBw for strengthening in a tensile test, besides grain refinement. Meanwhile, the fractured TiBw and microcracks around them contributed to fracturing. |
| topic |
tib whiskers dynamic recrystallization grain refinement strengthening |
| url |
https://www.mdpi.com/2075-4701/10/1/126 |
| work_keys_str_mv |
AT jiabinhou grainrefinementofti15mo3al27nb02sialloywiththerotationoftibwhiskersbypowdermetallurgyandcannedhotextrusion AT lingao grainrefinementofti15mo3al27nb02sialloywiththerotationoftibwhiskersbypowdermetallurgyandcannedhotextrusion AT guorongcui grainrefinementofti15mo3al27nb02sialloywiththerotationoftibwhiskersbypowdermetallurgyandcannedhotextrusion AT wenzhenchen grainrefinementofti15mo3al27nb02sialloywiththerotationoftibwhiskersbypowdermetallurgyandcannedhotextrusion AT wencongzhang grainrefinementofti15mo3al27nb02sialloywiththerotationoftibwhiskersbypowdermetallurgyandcannedhotextrusion AT wenguangtian grainrefinementofti15mo3al27nb02sialloywiththerotationoftibwhiskersbypowdermetallurgyandcannedhotextrusion |
| _version_ |
1724936284273639424 |