| 机械合金化Fe_(40)Ni_(40)Si_(20)纳米晶固溶体 |
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| 引用本文： | 陈文娟,杨渭.机械合金化Fe_(40)Ni_(40)Si_(20)纳米晶固溶体[J].四川理工学院学报(自然科学版),2005,18(4):36-38. |
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| 作者姓名： | 陈文娟 杨渭 |
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| 作者单位： | 1. 山东胜利职业学院电子工程系,山东,东营,257098
2. 中国石油大学(华东)物理学院,山东,东营,257061 |
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| 基金项目： | 教育部《高等学校骨干教师资助计划》(K001804A) |
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| 摘 要： | 机械合金化方法制备了Fe—Ni—Si三元系合金,利用X射线衍射仪研究了合金化过程中的 相变行为,计算了晶粒尺寸及微观应变。结果表明,经36小时球磨可形成α-Fe(bcc)和γ-Fe(fcc) 两相混合纳米晶固溶体;继续球磨,过饱和α相逐渐分解并向γ相转化,72小时后可得单相γ-Fe纳 米晶固溶体。球磨晶粒尺寸可达12 nm,微观应变随球磨时间先增加后减小。
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| 关 键 词： | 机械合金化 物相变化 晶粒尺寸及微观应变 |
| 文章编号： | 1673-1549(2005)04-0036-03 |
| 修稿时间： | 2005年8月10日 |
Mechanical Alloying of Fe40Ni40Si20 Nanocrystalline Solid Solution |
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| CHEN Wen-juan,YANG Wei.Mechanical Alloying of Fe40Ni40Si20 Nanocrystalline Solid Solution[J].Journal of Sichuan University of Science & Engineering:Natural Science Editton,2005,18(4):36-38. |
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| Authors: | CHEN Wen-juan YANG Wei |
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| Abstract: | Fe40Ni40Si20 alloy is prepared by mechanical alloying. XRD is used to study the phase transformation, grain size and micro-strain.The result shows that α-Fe(bcc) and γ -Fe(fcc) nanocrystalline solid solution would be achieved after ball milling for 36h. After further ball milling, the supersaturated α phase will be decomposed and transformed into y phase gradually.The complete γ -Fe nanocrystalline solid solution would be achieved after ball milling for 72h. Grain size of the powder is up to 12nm. Micro-strain increases with the increase of milling time first, and then decreases. |
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| Keywords: | mechanical alloying phase transformation grain size and micro-strain |
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