| TC18钛合金在热变形过程中的组织不均匀现象 |
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| 引用本文： | 孙曙宇,吕维洁.TC18钛合金在热变形过程中的组织不均匀现象[J].稀有金属材料与工程,2016,45(6):1545-1548. |
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| 作者姓名： | 孙曙宇 吕维洁 |
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| 作者单位： | 台州学院机械工程学院,上海交通大学金属基复合材料国家重点实验室 |
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| 基金项目： | 浙江省教育厅科研项目 (No. Y201533396) |
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| 摘 要： | 揭示了Ti-5Al-5Mo-5V-1Fe-1Cr合金在等温压缩过程中出现的组织不均匀现象。首先使用真空自耗炉制备出合金铸锭,而后进行热加工和热处理,使用热处理后的材料车削成圆柱形试样进行等温压缩试验,试样端面没有进行打磨、抛光处理,结果出现了严重的组织不均匀,在试样内部发现了轴对称分布的局部大变形区,这将增加材料受力时起裂的几率。并就该组织现象展开了研究。
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| 关 键 词： | TC18钛合金 等温压缩 组织不均匀 |
| 收稿时间： | 2015/1/11 0:00:00 |
| 修稿时间： | 2015/12/25 0:00:00 |
Microstructure Heterogeneity of TC18 Ti Alloy during Hot Deformation |
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| Sun Shuyu and Lu Weijie.Microstructure Heterogeneity of TC18 Ti Alloy during Hot Deformation[J].Rare Metal Materials and Engineering,2016,45(6):1545-1548. |
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| Authors: | Sun Shuyu and Lu Weijie |
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| Affiliation: | TaiZhou University,State key laboratory of Metal Matrix Composites,Shanghai Jiao Tong University |
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| Abstract: | Ti-5Al-5Mo-5V-1Fe-1Cr Ti alloy is an important aviation material. The microstructure heterogeneity of the alloy during isothermal compression is revealed in this work. The alloy is fabricated via the consumable vacuum arc-remelting furnace. The as-cast ingot is subjected to thermo-mechanical processing and heat treatment. Isothermal compression tests are conducted subsequently. The cylindrical specimens are machined from the heat-treated rods. The two ends of the specimens are not rubbed and polished. The local large deformation zones are observed in the specimens undergoing isothermal compression, which can cause crack nucleation in the material when the material bears load. The microstructural phenomenon is investigated in this work. |
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| Keywords: | TC18 Ti alloy Isothermal compression Microstructure heterogeneity |
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