A novel γ-tial alloy hydrogenated high-temperature solder and its preparation method
A high-temperature solder and alloy technology, which is applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems that solder is difficult to obtain a wide range of applications, the form of applicable joints is limited, and the cost of solder is high. Good mechanical properties, low cost effect
Inactive Publication Date: 2019-05-14
YELLOW RIVER CONSERVANCY TECHN INST
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Problems solved by technology
[0004] In order to overcome the above-mentioned prior art gamma -Under the working environment of TiAl alloy brazing joint at about 800°C, the strength is significantly lower, the cost of the brazing material used is relatively high, it is difficult for the brazing material to be widely used, and the applicable joint form is limited. The present invention provides a relatively priced lower, and gamma - A new type of brazing filler metal with high strength in the environment of about 800°C for TiAl alloy brazing joints and its preparation method
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[0018] Below in conjunction with accompanying drawing, the present invention will be further described:
[0019] a new type gamma -TiAl alloy hydrogenated high-temperature solder, the materials used and their weight ratio are: TiH 2 Ni powder accounts for 63-68wt.% of the total weight, Ni powder accounts for 13-16wt.% of the total weight, Cu accounts for 13-16wt.% of the total weight, V powder accounts for 0.2-0.5wt.% of the total weight, C powder accounts for 0.1~0.3wt.% of the total weight.
[0020] The new gamma -TiAl alloy hydrogenated high-temperature brazing filler metal is a kind of powder brazing filler metal, which is composed of six alloying elements: Ti, Ni, Cu, H, V, and C. The content of each alloying element is H: 0.1~0.3wt.%, respectively. V: 0.2~0.5wt.%, C: 0.1~0.3wt.%, the balance is Ti, Ni, Cu;
[0021] The new gamma -The preparation method of TiAl alloy hydrogenated high-temperature solder, comprising the following process steps:
[0022] 1) Ingredient...
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Abstract
The invention discloses a gamma ‑TiAl alloy hydrogenated high-temperature solder, the materials used and their weight ratios are: TiH2 powder accounts for 63-68wt.% of the total weight, Ni powder accounts for 13-16wt.% of the total weight, and Cu powder accounts for 13-16wt.% of the total weight 16wt.%, V powder accounts for 0.2-0.5wt.% of the total weight, and C powder accounts for 0.1-0.3wt.% of the total weight. The equipment required for the preparation of the solder in the present invention is simple, the preparation process is simple, does not contain precious metals such as Ag, and the cost is relatively low. The prepared solder is in powder form, which can meet the needs of brazing joints with different shapes. The γ-TiAl alloy brazed joint obtained by using this material has superior performance, and still has good mechanical properties at high temperatures, and can be used in the manufacture of γ-TiAl alloy components, especially the preparation of components used in high-temperature environments.
Description
technical field [0001] The invention relates to the field of solder materials, in particular to a solderable gamma - A novel hydrogenated Ti-based high-temperature brazing filler metal with TiAl alloy and joints with good high-temperature mechanical properties and a preparation method thereof. Background technique [0002] Titanium and titanium alloys have the advantages of high specific strength, corrosion resistance, and high elastic modulus. γ-TiAl alloys also have the characteristics of high temperature creep resistance, and are the most promising materials in aerospace materials. Comparing the properties of γ-TiAl alloys with superalloys and high-temperature ceramic materials, the specific strength, specific life, thermal conductivity, toughness and machinability of γ-TiAl-based alloys are better than or close to those of superalloys, but the density is greatly reduced. It is the best candidate material for use at 650~1000℃. In addition, γ-TiAl alloys are considered t...
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IPC IPC(8): B23K35/32B23K35/40
CPCB23K35/325B23K35/40
Inventor 郑兰霞杨彦涛范龙张豫徽岳鹏
Owner YELLOW RIVER CONSERVANCY TECHN INST