Next Article in Journal
Nanoindentation Properties of 18CrNiMo7-6 Steel after Carburizing and Quenching Determined by Continuous Stiffness Measurement Method
Previous Article in Journal
Reducing-Effect of Chloride for the Dissolution of Black Copper
Open AccessCommunication

Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion

1
School of Materials Science and Engineering, Harbin Institute of Technology, Weihai 264209, China
2
Naval Architecture and Marine Engineering College, Shandong Jiaotong University, Weihai 264209, China
3
Oriental Bluesky Titanium Technology Co., LTD, Yantai 264003, China
*
Author to whom correspondence should be addressed.
Metals 2020, 10(1), 126; https://doi.org/10.3390/met10010126 (registering DOI)
Received: 8 December 2019 / Revised: 10 January 2020 / Accepted: 12 January 2020 / Published: 15 January 2020
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 TiB2 powders. During pre-sintering, most TiB2 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. View Full-Text
Keywords: TiB whiskers; dynamic recrystallization; grain refinement; strengthening TiB whiskers; dynamic recrystallization; grain refinement; strengthening
Show Figures

Figure 1

MDPI and ACS Style

Hou, J.; Gao, L.; Cui, G.; Chen, W.; Zhang, W.; Tian, W. 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 2020, 10, 126.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop