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热氢处理对TC21钛合金铸态组织的影响
发布人：上海艾荔艾金属材料有限公司www.shailiai.com
更新时间：2015-08-27
针对α+β型TC21高强韧钛合金热加工抗力大等问题，采用热氢处理技术，对铸态试样进行0.1%~0.5%(质量分数) 5种不同氢含量的置氢处理和真空退火除氢处理。研究热氢处理过程中TC21钛合金组织结构和晶粒度变化特征，揭示热氢处理对钛合金组织演变的影响规律，探讨钛合金热氢处理组织细化机制。
热氢处理对TC21钛合金铸态组织的影响Effect of thermo-hydrogenation treatment on microstructure
of cast TC21 alloy
针对α+β型TC21高强韧钛合金热加工抗力大等问题，采用热氢处理技术，对铸态试样进行0.1%~0.5%(质量分数)
5种不同氢含量的置氢处理和真空退火除氢处理。研究热氢处理过程中TC21钛合金组织结构和晶粒度变化特征，揭示热氢处理对钛合金组织演变的影响规律，探讨钛合金热氢处理组织细化机制。结果表明，热氢处理可以显著细化晶粒，降低TC21铸态组织的变形抗力。
Aiming at the problems such as large deformation
resistance during hot working of high strength and high toughness (α+β)-type
titanium alloy TC21, all specimens were handled by thermo-hydrogenation
treatment technology, such as being hydrogenated respectively in five different
hydrogen contents from 0.1%~0.5% (mass fraction), and dehydrogenated by vacuum
annealing. The microstructure evolution of TC21 alloys with hydrogenation and
dehydrogenation was studied. The effects of thermo-hydrogenation treatment on
the microstructure，grain size, and variation regularity of TC21 were
investigated. The mechanism of microstructure refinement during thermo-
hydrogenation treatment was also discussed. The results show that
thermo-hydrogenation treatment can refine the microstructure and reduce the
deformation resistance largely.
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