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Vacuum brazing method of AlMgB14-TiB2 composite ceramic and TiAl-based alloy
The invention discloses a vacuum brazing method of AlMgB14-TiB2 composite ceramic and TiAl-based alloy. The method specifically comprises the following steps of: (1) mechanically ball-milling boron powder particles and AgCu eutectic powder for 1-4h to obtain a composite brazing filler metal; (2) separately pretreating an AlMgB14-TiB2 composite ceramic base metal and TiAl-based alloy, and then performing assembly with the composite brazing filler metal to obtain a brazed joint; and (3) putting the brazed joint into a vacuum furnace, heating the brazed joint to 820-920DEG C in a vacuum environment, keeping the temperature for 10-60min, and performing cooling, thus finishing the process. Active elements do not need to be added, the joint structure can reduce brittle-hard phase aggregation, the joint residual stress is effectively relieved, efficient, rapid and reliable connection of the AlMgB14-TiB2 composite ceramic and the TiAl-based alloy is achieved, the shear strength of the obtainedbrazed joint reaches up to 82.5MPa, and a good application value is achieved.
本发明公开了一种AlMgB14‑TiB2复合陶瓷与TiAl基合金的真空钎焊方法，具体包括以下步骤：(1)将硼粉颗粒、AgCu共晶粉末机械球磨1‑4h，得到复合钎料；(2)将AlMgB14‑TiB2复合陶瓷母材和TiAl基合金分别进行预处理，然后与复合钎料进行装配，得到钎焊接头；(3)将钎焊接头放入真空炉中，在真空环境下加热至820‑920℃，保温10‑60min，冷却，即完成。本发明无需添加活性元素，接头组织能够减少脆硬相聚集，有效缓解接头残余应力，实现AlMgB14‑TiB2复合陶瓷与TiAl基合金的高效、快速、可靠连接，获得的钎焊接头剪切强度高达82.5MPa，具有良好的应用价值。
Vacuum brazing method of AlMgB14-TiB2 composite ceramic and TiAl-based alloy
The invention discloses a vacuum brazing method of AlMgB14-TiB2 composite ceramic and TiAl-based alloy. The method specifically comprises the following steps of: (1) mechanically ball-milling boron powder particles and AgCu eutectic powder for 1-4h to obtain a composite brazing filler metal; (2) separately pretreating an AlMgB14-TiB2 composite ceramic base metal and TiAl-based alloy, and then performing assembly with the composite brazing filler metal to obtain a brazed joint; and (3) putting the brazed joint into a vacuum furnace, heating the brazed joint to 820-920DEG C in a vacuum environment, keeping the temperature for 10-60min, and performing cooling, thus finishing the process. Active elements do not need to be added, the joint structure can reduce brittle-hard phase aggregation, the joint residual stress is effectively relieved, efficient, rapid and reliable connection of the AlMgB14-TiB2 composite ceramic and the TiAl-based alloy is achieved, the shear strength of the obtainedbrazed joint reaches up to 82.5MPa, and a good application value is achieved.
本发明公开了一种AlMgB14‑TiB2复合陶瓷与TiAl基合金的真空钎焊方法，具体包括以下步骤：(1)将硼粉颗粒、AgCu共晶粉末机械球磨1‑4h，得到复合钎料；(2)将AlMgB14‑TiB2复合陶瓷母材和TiAl基合金分别进行预处理，然后与复合钎料进行装配，得到钎焊接头；(3)将钎焊接头放入真空炉中，在真空环境下加热至820‑920℃，保温10‑60min，冷却，即完成。本发明无需添加活性元素，接头组织能够减少脆硬相聚集，有效缓解接头残余应力，实现AlMgB14‑TiB2复合陶瓷与TiAl基合金的高效、快速、可靠连接，获得的钎焊接头剪切强度高达82.5MPa，具有良好的应用价值。
Vacuum brazing method of AlMgB14-TiB2 composite ceramic and TiAl-based alloy
一种AlMgB14-TiB2复合陶瓷与TiAl基合金的真空钎焊方法
HU SHENGPENG (author) / LEI YU (author) / SONG XIAOGUO (author) / FU WEI (author) / YANG TAILI (author) / LUO YUN (author) / MENG QINGSEN (author) / WANG GUODONG (author)
2020-10-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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