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TiAl合金与42CrMo钢钎焊连接界面组织及形成机理

The Microstructure and Forming Mechanism of Brazing Interface of TiAl Alloy to Steel 42CrMo

【作者】 高强

【导师】 赵越超; 杨锐;

【作者基本信息】 辽宁工程技术大学 , 材料加工工程, 2002, 硕士

【摘要】 本文使用真空钎焊方法对TiAl/B-Ag72Cu/42CrMo进行了研究,分析了TiAl/B-Ag72Cu/42CrMo钎焊接头组织。界面分析显示,当钎焊连接温度低于830℃时,B-Ag72Cu/42CrMo的结合面末形成化合物,但当钎焊连接温度大于830℃时,B-Ag72Cu/42CrMo的界面形成极薄的化合物反应层;而TiAl/B-Ag72Cu的结合面上在任何钎焊温度下均有Al-Cu-Ti金属间化合物产生。分析了连接界面化合物反应层的形成和长大机制。

【Abstract】 In this paper, the vacuum brazing of the TiAl compound and 42CrMo steel was studied. Then the joint microstructure of TiAl/ B-Ag72Cu /42CrMo was analyzed. The results of vacuum brazing of the TiAl compound and 42CrMo steel show that when the brazing temperature is under 830癈, no icompound is formed at the boundary on the 42CrMo side; but when brazing temperature over 830癈, a narrow compound layer is found at the same place. While on the TiAl side, there is Al-Cu-Ti intermetallic compound at any brazing temperature; The forming and growth mechanism of brazing interface is outlined.

【关键词】 TiAI真空钎焊界面化合物反应层
【Key words】 vacuum brazinginterfacecompound reaction layer
  • 【分类号】TG454
  • 【下载频次】184
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