基于Ni基钎料的钼铼合金钎焊组织及性能研究
毕业论文关键字：钼铼合金 钎焊 BNi5-2.4Zr钎料 显微组织 接头性能
Abstract Molybdenum is a kind of high performance material, which has excellent hightemperature mechanical properties and physical properties. It is one of the refractorymetal materials with great application prospect.However the molybdenum has thecharacteristics of low temperature brittleness and brittle transition, and its hightemperature oxidation resistance and poor welding performance, which limits itsapplications as a structural material. The study found that it is effective to changemolybdenum that adding rhenium metal to form molybdenum rhenium alloy.Molybdenum rhenium alloy is structural materials with good thermal stability andresistance to chemical corrosion.The core purpose of this paper is on molybdenum rhenium alloy brazing andintroduce the molybdenum rhenium alloy existing welding method. BNi8-Zramorphous solder welds molybdenum rhenium alloy. Pointing out the researchdirection of molybdenum rhenium alloy. Exploring molybdenum rhenium alloybrazing mechanism of exploration. Microscope is used to observe the organizationand the structure of the base material. Using scanning electron microscopy (SEM) toobserve molybdenum rhenium alloy weld constituents were analyzed, the use ofuniversal testing machine testing sample shear performance. Comprehensive resultson the performance of the molybdenum rhenium alloy brazing welding head isanalyzed.Comprehensive test results, organization analysis and mechanics experiment.The molybdenum rhenium alloy is solder material and mutual diffusion brazingprocess what can get good performance of welded joint. Joint has a higher strength,but has a small amount of compounds that change the center of the weld joint quality.
Keywords: Molybdenum rhenium alloy；Brazing；BNi8-2.4Zr Solder；microstructure；joint performance
目录
摘要I
AbstractII
第一章绪论.1
1.1课题背景.1
1.2Mo-Re复合材料.2
1.2.1Mo-Re复合材料的基本特征.2
1.2.2钼铼合金的生产工艺4
1.2.3Mo-Re合金的应用前景5
1.3Mo-Re合金的连接技术5
1.3.2电阻焊（RSW）5
1.3.3电子束焊（EBW）6
1.3.4钨极氩弧焊（TIG焊）.7
1.3.5激光焊.7
1.3.6摩擦焊.8
1.3.7钎焊.9
1.4Ni基钎料9
1.4.1Ni基钎料的特征.9
1.4.2Ni基钎料的发展前景.10
1.5研究内容与意义11
1.5.1研究内容.11
第二章实验材料及试验方法.13
2.1实验材料.13