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唐翠勇,赵磊,严英恋,李智奇,陈红梅,欧阳义芳,钟夏平.Al65Fe10Zr20Gd5非晶态合金的制备与晶化P[J].广西科学,2010,17(1):64-67. [点击复制]
- TANG Cui-yong,ZHAO Lei,YAN Ying-lian,LI zhi-qi,CHEN Hong-mei,OUYANG Yi-fang,ZHONG Xia-ping.reparation and Crystallization of Amorphous Al65Fe10Zr20Gd5[J].Guangxi Sciences,2010,17(1):64-67. [点击复制]
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| Al65Fe10Zr20Gd5非晶态合金的制备与晶化P |
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唐翠勇1, 赵磊1, 严英恋1, 李智奇1, 陈红梅1, 欧阳义芳1, 钟夏平2
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| (1.广西大学物理科学与工程技术学院, 广西南宁 530004;2.广西科学院, 广西南宁 530007) |
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| 摘要: |
| 研究Al65Fe10Zr20Gd5混合粉末的机械合金化引起的非晶态化过程,采用X射线衍射仪(XRD)和扫描电镜(SEM)分析混合粉末的结构演变和形貌,用差热分析仪(DTA)分析非晶态合金的热稳定性。结果表明,粉末在机械合金化过程中先细化,由初始粉末直接扩散固溶导致晶格崩溃形成非晶,球磨60h后Al65Fe10Zr20Gd5完全非晶化。DTA曲线显示非晶合金晶化呈现单一的放热峰。合金在923K等温退火1h后,完全晶化,析出复杂的中间相,表现出多晶型晶化的特点,晶化产物为Fe5Gd、Fe2Zr、Al2Gd3和α-(Al)固溶相。Al65Fe10Zr20Gd5非晶晶化激活能为259.64 kJ·mol-1,该非晶合金具有较高的热稳定性和较强的抗晶化能力。 |
| 关键词: 合金 机械合金化 Al65Fe10Zr20Gd5 非晶态合金 热稳定性 |
| DOI： |
| 投稿时间：2009-04-08 |
| 基金项目:国家自然科学基金项目(50761002),广西自然基金(0728025),广西大学有色金属及材料加工新技术教育部重点实验室开放基金(GXKFJ-03),广西研究生创新项目(2008105930805M063)资助。 |
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| reparation and Crystallization of Amorphous Al65Fe10Zr20Gd5 |
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TANG Cui-yong1, ZHAO Lei1, YAN Ying-lian1, LI zhi-qi1, CHEN Hong-mei1, OUYANG Yi-fang1, ZHONG Xia-ping2
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| (1.College of Physics Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China;2.Guangxi Academy of Science, Nanning, Guangxi, 530007, China) |
| Abstract: |
| The amorphous Al65Fe10Zr20Gd5 alloy was successfully prepared by mechanical alloying.The microstructure evolution, phase transformation and thermal stability were investigated by X-ray diffraction technique, scanning electron microscopy and differential thermal analysis.The results show that the mixture powders were fully amorphized after milling for 60h.DTA results show that one exothermal peak during the crystallization of amorphous alloy.The production phases of crystallization for amorphous Al65Fe10Zr20Gd5 alloy, annealing at temperature 923K for one hour, composed of α-(Al) solid solution, Fe5Gd, Fe2Zr and Al2Gd3.The crystallization activation energy of the amorphous alloy estimated with the Kissinger equation is 259.64 kJ·mol-1. |
| Key words: alloy mechanical alloying Al65Fe10Zr20Gd5 amorphous alloy thermal stability |
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