Ti-6Al-4V钛合金组织对其室温吸氢行为影响的研究

Effect of microstructure on room-temperature hydrogen absorption behavior of Ti-6Al-4V alloy

摘要:

本文采用电解充氢的方法研究了具有不同组织形貌的Ti-6Al-4V钛合金的室温吸氢能力的差异及其形成原因。研究表明,Ti-6Al-4V钛合金组织形貌不同,其室温吸氢能力也有明显的不同。双态组织的室温吸氢能力最弱,而魏氏组织的室温吸氢能力最强。β相的形貌、数量、连续性等组织特征对其吸氢能力影响很大,而α相的组织特征对其吸氢能力影响相对较小。双态组织的Ti-6Al-4V钛合金应该具有更好的抗氢脆效果。

Abstract:

In this paper, the effect of microstructure on the room-temperature hydrogen absorption behavior of Ti-6Al-4V alloy was studied through electrolytic hydrogen charging method. The results show that Ti-6Al-4V alloys with different microstructures show obviously different room-temperature hydrogen absorbing ability. The hydrogen absorbing ability of the alloy with duplex microstructure is the weakest and that of the alloy with widmanstatten microstructure is the strongest at room temperature. The influence of the microstructure characteristics of β phase is stronger than that of α phase on the capability for room-temperature hydrogen absorption. The Ti-6Al-4V titanium alloy with duplex microstructure should be the one with a perfect resistance to the hydrogen embrittlement.