Influence of Grain Size and Microstructure on Oxidation Rates in Titanium Alloy Ti-6Al-4V Under Superplastic Forming Conditions

Franna Pitt; M. Ramulu

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Influence of Grain Size and Microstructure on Oxidation Rates in Titanium Alloy Ti-6Al-4V Under Superplastic Forming Conditions

机译：超塑性成形条件下晶粒尺寸和微观结构对Ti-6Al-4V钛合金氧化速率的影响

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Ti-6A1-4V (Ti-6-4) sheets of two different grain sizes were exposed to time and temperature conditions representative of superplastic forming (SPF). The influence of SPF conditions on oxidation rates was evaluated in terms of weight gain, a-case depth, and microhardness profile. Differences in the response are related to the difference in grain size between the two lots of Ti-6-4. Fine grain TJ-6A1-4V exhibits faster oxygen diffusion in all three areas examined in this study, weight gain, a-case thickness, and increased microhardness depth. The differences were found to be significant relative to diffusion analysis and processing during manufacturing. Results from this work support reduced temperature SPF using fine grain material and the accompanying benefits in manufacturing superplastic parts.

机译：将两种不同晶粒尺寸的Ti-6A1-4V（Ti-6-4）板暴露于代表超塑性成形（SPF）的时间和温度条件下。根据重量增加，α-表面深度和显微硬度分布，评估了SPF条件对氧化速率的影响。反应的差异与两批Ti-6-4之间的晶粒尺寸差异有关。细晶粒TJ-6A1-4V在这项研究中检查的所有三个区域均表现出较快的氧扩散，重量增加，a壳厚度和增加的显微硬度深度。发现差异相对于制造期间的扩散分析和处理而言是显着的。这项工作的结果支持使用细颗粒材料降低SPF的温度，以及在制造超塑零件方面的附带好处。

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《Journal of Materials Engineering and Performance》 |2004年第6期|共8页
作者
Franna Pitt; M. Ramulu;
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正文语种 eng
中图分类金属学与金属工艺;
关键词
alpha-case; aerospace; diffusion; grain size; micro-hardness; oxidation; superplastic forming (SPF); titanium (Ti); titanium alloy;

机译：铝壳;航空航天;扩散;粒度;显微硬度;氧化;超塑性成形（SPF）;钛（Ti）;钛合金;

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1. 初生α相晶粒尺寸对Ti-6Al-4V合金压力连接界面特征及力学性能的影响 [J] . 李宏, 李淼泉, 刘宏彬, 中国有色金属学报（英文版） . 2016,第001期
2. 初生α相晶粒尺寸对Ti-6Al-4V合金压力连接界面特征及力学性能的影响 [J] . 李宏, 李淼泉, 刘宏彬, 中国有色金属学报：英文版 . 2016,第001期
3. Influence of Grain Size and Microstructure on Oxidation Rates in Titanium Alloy Ti-6Al-4V Under Superplastic Forming Conditions [J] . Franna Pitt, M. Ramulu Journal of Materials Engineering and Performance . 2004,第6期

机译：超塑性成形条件下晶粒尺寸和微观结构对Ti-6Al-4V钛合金氧化速率的影响
4. Mechanical Behavior of Titanium Alloy Ti-6Al-4V with Unprepared Microstructure under Jumpwise Variations of the Strain Rate in the Superplastic State [J] . S. S. Bkhattacharya, O.I. Bylya, R. A. Vasin, Mechanics of solids . 2009,第6期

机译：超塑性状态下应变速率的跳跃式变化下具有未准备好的微观结构的钛合金Ti-6Al-4V的力学行为
5. Influence of grain size, aging conditions and tension rate on the mechanical behavior of titanium low-cost metastable beta-alloy in thermally hardened condition [J] . P.E. Markovsky, V.I. Bondarchuk, O.M. Herasymchuk Materials Science and Engineering . 2015,第OCTa1期

机译：晶粒尺寸，时效条件和拉伸速率对热硬化条件下低成本钛亚稳β-合金力学行为的影响
6. The features of deformation behavior of ultra-fine grained titanium and aluminum alloys under conditions of high strain rate superplasticity [C] . E.V. Naydenkin, I.V. Ratochka Nanomaterials by Severe Plastic Deformation IV . 2008

机译：高应变率超塑性条件下超细晶钛铝合金的变形行为特征
7. Grain size control and superplasticity in 6013-type aluminum alloys. [D] . Troeger, Lillianne Plaster Whitelock. 1998

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8. Superplasticity of Ti-6Al-4V Titanium Alloy: Microstructure Evolution and Constitutive Modelling [O] . Ahmed O. Mosleh, Anastasia V. Mikhaylovskaya, Anton D. Kotov, 2019

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9. Investigation of the mechanical behaviour and microstructure evolution of titanium alloys under superplastic and hot forming conditions. [O] . Marcio Wagner Batista dos Santos -1

机译：超塑性和热成形条件下钛合金力学行为及微观结构演化研究。

Influence of Grain Size and Microstructure on Oxidation Rates in Titanium Alloy Ti-6Al-4V Under Superplastic Forming Conditions

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