Lee Byung Ju, Song Jae Sook, Moon Won Jin, Hong Sun Ig
Department of Advanced Materials Engineering, Chungnam National University, Daejeon 34134, South Korea.
Korea Basic Science Institute, Gwangju 61186, South Korea.
Data Brief. 2021 Jan 5;34:106713. doi: 10.1016/j.dib.2020.106713. eCollection 2021 Feb.
The data presented in this article are related to a research paper on the modification of deformed nanostructure and mechanical performance of metastable high entropy alloys (HEAs) [1]. FeMnCrCo alloys with and without nitrogen were synthesized in a vacuum induction furnace using pure metals of 99.99% purity and FeCrN as nitrogen source. The nitrogen content was determined by Leco O/N-836 determinator for nitrogen-doped alloys. Transmission electron microscopy (TEM) were carried at 200 kV equipped with energy dispersive spectroscopy (EDS). Tensile testing was performed at room temperature. The strain rate jump tests were conducted by changing the strain rate between 10 and 10 s to measure the strain rate sensitivity. The nanostructural evolutions by deformation including extended stacking faults (ESFs), ε-martensite and twins were examined using EBSD and TEM for the annealed samples and those strained to different strain levels. The role of partial dislocations on the formation of various PDIDs were analysed and the energies stored as deformed nanostructure (ESDN) after the PDID band formation were used to predict the evolution of various nanostructure with strain. The data and approach would provide a useful insight into the nanostructural evolution in metastable high entropy alloys.
本文所呈现的数据与一篇关于亚稳高熵合金（HEAs）变形纳米结构改性及力学性能的研究论文相关[1]。采用纯度为99.99%的纯金属以及FeCrN作为氮源，在真空感应炉中合成了含氮和不含氮的FeMnCrCo合金。通过Leco O/N - 836氮测定仪测定掺氮合金中的氮含量。在配备能量色散谱仪（EDS）的200 kV透射电子显微镜（TEM）上进行测试。在室温下进行拉伸试验。通过在10⁻⁴和10⁻¹ s⁻¹之间改变应变速率来进行应变速率跳跃试验，以测量应变速率敏感性。对于退火样品以及应变至不同应变水平的样品，使用电子背散射衍射（EBSD）和TEM研究了包括扩展堆垛层错（ESF）、ε - 马氏体和孪晶在内的变形引起的纳米结构演变。分析了部分位错在各种位错诱导缺陷（PDID）形成中的作用，并将PDID带形成后作为变形纳米结构（ESDN）存储的能量用于预测各种纳米结构随应变的演变。这些数据和方法将为亚稳高熵合金中的纳米结构演变提供有用的见解。
