Instrumented indentation at elevated temperatures for determination of material properties of fusion relevant materials
Instrumented indentation at elevated temperatures for determination of material properties of fusion relevant materials
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DOI：
10.1016/j.nme.2016.09.011
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发表时间：
2016-12
影响因子：
2.6
通讯作者：
J. Bredl;Manuel Dany;H. Schneider;O. Kraft
中科院分区：
文献类型：
--
作者：
J. Bredl;Manuel Dany;H. Schneider;O. Kraft
在聚变材料研究方面，小尺寸样品的测试是仪器化压痕的一个重要优势。通过连续记录压痕深度和压痕压力，可以确定被测材料的力学性能。在这项研究中，介绍了使用定制压痕装置进行高温实验的结果。研究了未辐照状态下的低活化铁素体马氏体钢EUROFER，首次在500℃以下的高温下研究了维氏针尖和球状尖端。数值模拟了不同温度下的压痕过程，并将相应的载荷-位移数据与实验结果进行了比较。文中还对压痕尖端半径变化的影响进行了量化。最后，讨论了压痕装置在热室环境限制下的工作情况。
The testing of small sized samples is an important advantage of the instrumented indentation with respect to the investigation of materials for fusion application. A continuous recording of the indentation depth and force enables a determination of mechanical properties of the tested material.In this study, the results of the high temperature experiments with a custom made indentation device are presented. The reduced activation ferritic martensitic steel EUROFER is investigated in an unirradiated state with spherical tips and for the first time Vickers tips at increasing temperatures up to 500 °C.The indentation procedure is numerically simulated at different temperatures and the corresponding load-displacement-data are compared with the experimental results. A quantification of the influence of variations of the indentation tip radius is presented as well.Finally, the operation of the indentation device with respect to the restrictions of the Hot Cell environment is discussed.