Experimental study of the Be-C phase diagram

Experimental study of the Be-C phase diagram
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Be-C相图的实验研究

DOI:
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发表时间:
2019-03
期刊:
CALPHAD
影响因子:
--
通讯作者:
Haitang Yang
Haitang Yang
中科院分区:
其他
文献类型:
--
作者:
Kun Liu;Xiaozhong Huang;Zeyu Fu;Wang Peisheng;Du Yong;Haitang Yang

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用实验技术研究了Be-C体系的相平衡。采用粉末冶金法制备了11种关键合金。用X射线衍射仪、扫描电子显微镜和差热分析仪测定了其物相组成和相变温度。首次获得了Be-C体系的完整相图。本工作表明,该体系中只有一种中间体BE2c。确定了一个同素各向异性转变((βBe)↔(αBe)和两个共晶反应(L↔(βBe)+BE2c和L↔BE2c+(C)。
The phase equilibria in the Be-C system were studied via experiment technique. Eleven key alloys were prepared by powder metallurgy method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential thermal analysis (DTA) were used to determine phase compositions and phase transition temperatures. For the frst time, the entire phase diagram for the Be-C system was obtained in the present work. The present work confrms that there is only one intermediate compound Be2C in this system. One allotropic transformation ((βBe) ↔ (αBe)) and two eutectic reactions (L ↔ (βBe) + Be2C and L ↔ Be2C + (C)) were determined.
DOI: 10.1088/0953-8984/21/44/445002
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