Effect of Solution Temperature on Dynamic Mechanical Properties and Microstructure of TB6 Titanium Alloy

ZHANG Zhao; GUO Baoqiao; RAN Chun; CHEN Wen; CHEN Pengwan

doi:10.11858/gywlxb.20210762

Volume 35 Issue 6

Nov 2021

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Chinese Journal of High Pressure Physics > 2021 > 35(6): 064104.

ZHANG Zhao, GUO Baoqiao, RAN Chun, CHEN Wen, CHEN Pengwan. Effect of Solution Temperature on Dynamic Mechanical Properties and Microstructure of TB6 Titanium Alloy[J]. Chinese Journal of High Pressure Physics, 2021, 35(6): 064104. doi: 10.11858/gywlxb.20210762

Citation:

ZHANG Zhao, GUO Baoqiao, RAN Chun, CHEN Wen, CHEN Pengwan. Effect of Solution Temperature on Dynamic Mechanical Properties and Microstructure of TB6 Titanium Alloy[J]. Chinese Journal of High Pressure Physics, 2021, 35(6): 064104. doi: 10.11858/gywlxb.20210762

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Effect of Solution Temperature on Dynamic Mechanical Properties and Microstructure of TB6 Titanium Alloy

doi: 10.11858/gywlxb.20210762

ZHANG Zhao^1
,,
GUO Baoqiao^{1,*
,
,},
RAN Chun^{1, 2},
CHEN Wen¹,
CHEN Pengwan¹

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
China Ordnance Society, Beijing 100089, China

Received Date: 30 Mar 2021
Rev Recd Date: 09 Apr 2021

Abstract

Abstract

The effect of solution temperature on the dynamic mechanical properties and microstructure of near-β-phase TB6 titanium alloy was studied. Dynamic compression tests were carried out through the split Hopkinson pressure bar (SHPB) system, with untreated and treated TB6 titanium alloy specimens. The results indicate that both the untreated and treated TB6 titanium alloys perform the strengthening effect of strain rate, and their compression mode is exhibited as the typical shear failure. The solution temperature that converts the strain hardening of TB6 into strain softening is ranging from 700 ℃ to 750 ℃. The microscopic performance characterized by optical microscope (OM), X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods show that the primary α-phase in TB6 is partially dissolved and the strength decreases after a solution treatment at 700 ℃. When the solution treatment is equal to or greater than 750 ℃, the primary α-phase is completely transformed into β-phase. The β grain becomes bigger and the strength increases, but the plasticity decreases evidently.
- TB6 titanium alloy,
- solution treatment,
- dynamic mechanical properties,
- Hopkinson pressure bar,
- phase transition point

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References

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