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王同敏, 王琨, 朱晶, 曹飞, 谢红兰, 黄万霞, 包永明. 同步辐射成像技术在材料科学中的应用——金属合金晶体生长原位可视化[J]. 物理, 2012, 41(04): 244-248.
引用本文: 王同敏, 王琨, 朱晶, 曹飞, 谢红兰, 黄万霞, 包永明. 同步辐射成像技术在材料科学中的应用——金属合金晶体生长原位可视化[J]. 物理, 2012, 41(04): 244-248.
Applications of synchrotron microradiography in materials science in situ visualization of the growth of metallic alloy crystals[J]. PHYSICS, 2012, 41(04): 244-248.
Citation: Applications of synchrotron microradiography in materials science in situ visualization of the growth of metallic alloy crystals[J]. PHYSICS, 2012, 41(04): 244-248.

同步辐射成像技术在材料科学中的应用——金属合金晶体生长原位可视化

Applications of synchrotron microradiography in materials science in situ visualization of the growth of metallic alloy crystals

  • 摘要: 金属及其合金是一类重要的结构和功能材料,广泛应用于航空航天、汽车、造船等行业.金属合金的宏观性能实质上取决于其微观组织,微观组织的演变通常是一个微米范畴的晶体生长过程.由于金属合金的不透明性以及结晶过程的高温环境,长期以来,金属合金的晶体生长过程如同一个黑匣子,一直不为人们所知,只能通过分析最终微观组织或者中间淬火组织来推断黑匣子里可能发生了哪些现象.同步辐射X射线实时成像技术的出现,为实现金属合金晶体生长的原位可视化提供了可能,从而找到了打开这一黑匣子的钥匙.文章介绍了金属合金晶体生长原位可视化研究工作的发展历程及最新进展,列举了应用同步辐射实时成像技术原位观察合金晶体生长行为的典型研究结果,并对该成像技术在金属材料领域的未来应用进行了展望.

     

    Abstract: Metals and their alloys are an important type of structural and functional material and have been widely used in the aerospace, automobile, shipbuilding and other industries.The macro-properties of metallic alloys actually depend on their microstructures.The evolution of their microstructures generally involves a dynamic process of crystal growth on the scale of micrometers.The crystal growth of these alloys is still a puzzle to us due to their opacity.Conventional metallography techniques are limited by the high temperature of the phase changes so it is not possible to perform in situ observation of the evolving crystal morphology.The in situ visualization of the crystal growth has now become possible with the application of synchrotron radiation imaging techniques, which are just the right key to unravel the mystery mentioned above.In this paper, the development and current state-of-the-art of in situ crystal growth visualization are reviewed.Some typical application examples are presented, and promising applications in materials science are further expected.

     

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