Investigation on the microstructure and mechanical properties of CuCrZr after manufacturing thermal cycle for plasma facing component
Investigation on the microstructure and mechanical properties of CuCrZr after manufacturing thermal cycle for plasma facing component
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DOI：
10.1016/j.jnucmat.2010.12.157
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发表时间：
2011-10
影响因子：
3.1
通讯作者：
J. Park;Y. Jung;Byung-Kwon Choi;Jung-Suk Lee;Y. Jeong;B. Hong
中科院分区：
文献类型：
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作者：
J. Park;Y. Jung;Byung-Kwon Choi;Jung-Suk Lee;Y. Jeong;B. Hong
研究了制造热循环对CuCrZr合金各种力学性能的影响。维氏硬度随时效温度的变化与大范围热处理的强度变化相同。夏比冲击功随时效温度的变化趋势与强度和硬度的变化趋势相反。至少就CuCrZr的冲击能而言，如果在ITER第一壁的制造完成之后CuCrZr的强度能够保持高于极限值，则在较高温度下时效将是优选的。冷却速度和时效温度对CuCrZr合金的疲劳寿命有一定的影响。特别是在高应变幅下，弹性和塑性组分对疲劳响应的贡献取决于屈服强度，而屈服强度由时效温度决定。
The effects of manufacturing thermal cycle on the various mechanical properties of CuCrZr were investigated. Vickers hardness was changed with an aging temperature in an identical manner with the strength change in a wide range of heat treatment. The change of Charpy impact energy with an aging temperature exhibited an opposite trend to the changes of the strength and hardness. At least in terms of the impact energy of CuCrZr, aging at a higher temperate would be preferable if the strength of CuCrZr could be maintained higher than the limitation value after the completion of the fabrication of ITER first wall. The fatigue life of CuCrZr was influenced to a certain extent by the cooling rate and the aging temperature. Especially in the higher strain amplitude, the contribution of the elastic and plastic components to the fatigue response was dependent on the yield strength which is determined by the aging temperature.