| Ni 基高温合金 Al-Si 涂层脆-塑性转变温度及其疲劳行为研究 |
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| 引用本文： | 张德堂.Ni 基高温合金 Al-Si 涂层脆-塑性转变温度及其疲劳行为研究[J].航空学报,1998,19(5):631-635. |
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| 作者姓名： | 张德堂 |
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| 作者单位： | 北京航空材料研究院第4 研究室, 北京, 100095 |
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| 摘 要： | 利用高温金相显微镜改进加载装置，在动态下测定了Al-Si高温涂层的脆-塑性转变温度及其影响因素。研究结果表明，Al-Si涂层的脆-塑性转变温度随着Al,Si浓度的减少而降低，通过热处理的方法使涂层的Al,Si浓度降低，可有效地降低涂层的显微硬度和脆-塑性转变温度。另处，还系统研究了涂层与基体在不同温度下断裂失效的模式及其机制。
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| 关 键 词： | Al－Si涂层 Ni基高温合金 脆－塑性转变 疲劳行为 |
| 收稿时间： | 1998-01-14 |
| 修稿时间： | 1998-04-23 |
INVESTIGATION ON THE BRITTLE-DUCTILITY TRANSFORMATION TEMPERATURE AND FATIGUE BEHAVIOR OF Al-Si COATING FOR NICKEL-BASE SUPERALLOY |
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| Zhang Detang.INVESTIGATION ON THE BRITTLE-DUCTILITY TRANSFORMATION TEMPERATURE AND FATIGUE BEHAVIOR OF Al-Si COATING FOR NICKEL-BASE SUPERALLOY[J].Acta Aeronautica et Astronautica Sinica,1998,19(5):631-635. |
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| Authors: | Zhang Detang |
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| Institution: | Fourth Laboratory, Beijing Institute of Aeronautical Materials, Beijing,100095 |
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| Abstract: | High temperature microscope with loading equipment has been
used and the brittle-ductility transformation temperature of Al-Si coating has been
measured. Research results show that brittle-ductility transformation temperature of Al-Si
coating decreases with decreasing of Al and Si contents. Al and Si contents can be
decreased by heat treatment which induces obviously a decrease of microhardness and
brittle-ductility transformation temperature of coating. The fracture mode and mechanism
for both nickel-base superalloy and coating at different temperatures have been
investigated in this paper. |
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| Keywords: | Al Si coating nickel base superalloy brittle ductility transformation temperature fatigue behaviors |
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