High damping capacity in a wide ambient-temperature range in hydrogen-doped and hydrogen-free Ti–45Pd–5Cr martensitic alloy
High damping capacity in a wide ambient-temperature range in hydrogen-doped and hydrogen-free Ti–45Pd–5Cr martensitic alloy
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DOI：
10.1016/j.scriptamat.2009.06.033
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发表时间：
2009-10
影响因子：
6
通讯作者：
Yumei Zhou;G. Fan;D. Xue;Xiangdong Ding;K. Otsuka;J. Sun;X. Ren
中科院分区：
文献类型：
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作者：
Yumei Zhou;G. Fan;D. Xue;Xiangdong Ding;K. Otsuka;J. Sun;X. Ren
在室温（250- 400 K）范围内表现出高阻尼能力的合金是罕见的。本文报道了马氏体合金Ti-45 Pd-5Cr在此温度范围内表现出孪晶界相关的高阻尼能力。在掺氢马氏体状态下，存在弛豫型高阻尼峰（Q−1 <$0.09），延伸范围为305- 370 K。在无氢马氏体状态下，在250- 450 K范围内有一个迷人的高阻尼平台（Q−1 <$0.05）。这项工作提供了新的见解，如何开发高阻尼合金所需的温度范围。
Alloys exhibiting high damping capacity in ambient-temperature range (250–400K) are rare. Here it is reported that a martensitic alloy Ti–45Pd–5Cr shows twin-boundary-related high damping capacity over this temperature range. In the hydrogen-doped martensitic state, a relaxation-type high damping peak (Q−1≈0.09) exists, extending over 305–370K. In the hydrogen-free martensitic state, there is a fascinating high-damping plateau (Q−1≈0.05) over 250–450K. This work provides new insight into how to develop high damping alloys for the desired temperature range.