In this work, a blend of Ti, Nb, and Mn powders, with a nominal composition of 15 wt.% of Mn, and balanced Ti and Nb wt.%, was selected to be mechanically alloyed by the following two alternative high-energy milling devices: a vibratory 8000D mixer/mill^® and a PM400 Retsch^® planetary ball mill. Two ball-to-powder ratio (BPR) conditions (10:1 and 20:1) were applied, to study the evolution of the synthesized phases under each of the two mechanical alloying conditions. The main findings observed include the following: (1) the sequence conversion evolved from raw elements to a transitory bcc-TiNbMn alloy, and subsequently to an fcc-TiNb15Mn alloy, independent of the milling conditions; (2) the total full conversion to the fcc-TiNb15Mn alloy was only reached by the planetary mill at a minimum of 12 h of milling time, for either of the BPR employed; (3) the planetary mill produced a non-negligible Fe contamination from the milling media, when the highest BPR and milling time were applied; and (4) the final fcc-TiNb15Mn alloy synthesized presents a nanocrystalline nature and a partial degree of amorphization.

中文翻译：

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研磨参数对高能球磨制备纳米结构 FCC-TiNb15Mn 合金的影响

在这项工作中，Ti、Nb 和 Mn 粉末的混合物，具有 15 wt.% 的 Mn 和平衡的 Ti 和 Nb wt.%，被选择通过以下两种替代的高能合金进行机械合金化研磨设备：一台振动式 8000D 混合机/磨机^®和一台 PM400 Retsch ^®行星式球磨机。应用了两种球粉比 (BPR) 条件（10:1 和 20:1），以研究在两种机械合金化条件下合成相的演变。观察到的主要发现包括以下内容：（1）从原始元素演变为瞬态 bcc-TiNbMn 合金，随后演变为 fcc-TiNb15Mn 合金的序列转换，与铣削条件无关；(2) 对于采用的任何一种 BPR，行星式研磨机仅在研磨时间至少为 12 小时时才能完全完全转化为 fcc-TiNb15Mn 合金；(3) 当应用最高 BPR 和研磨时间时，行星式研磨机从研磨介质中产生了不可忽略的 Fe 污染物；(4) 最终合成的 fcc-TiNb15Mn 合金呈现纳米晶性质和部分非晶化程度。