Ti-6Al-4V合金氢致塑性效应与应用

doi:CNKI:11-1929/V.20110310.1711.003

Abstract

Abstract: The microstructure of hydrogenated Ti-6Al-4V alloy is studied by an optical microscope, and its phase transformations are analyzed during the hydrogenating treatment by X-ray diffraction(XRD). The deformation behavior of the hydrogenated Ti-6Al-4V alloy is investigated through compression tests at room temperature, and jumptests are performed, too. The results show that the presence of hydrogen in the alloy promotes the formation of martensite α″ and metastable phase β, and the formation and transition of metastable phase β is the major factor for the improvement of processability of Ti-6Al-4V alloy. Compared with the as-received alloy, the peak stress of hydrogenated Ti-6Al-4V with 0.60% H to 0.90% H decreases by 60 MPa and its compression limit improves by over 40%. When the hydrogen content reaches 0.80%, 90°sunk screws of diameter φ 10 mm can be prepared from Ti-6Al-4V by alloy jumptests at room temperature.

Key words: Titanium alloys, Ti-6Al-4V alloy, hydrogenating treatment, microstructure, deformation behavior, sunk screw

CLC Number:

WANG Yaoqi, HOU Hongliang, SUN Zhonggang. Plastic Effect of Hydrogenated Ti-6Al-4V Alloy and Its Application[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(8): 1563-1568.

References

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Plastic Effect of Hydrogenated Ti-6Al-4V Alloy and Its Application

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