Method to eliminate dissimilar metal welds

A method of joining dissimilar metals without welding, comprising the steps of:

• (a) providing a first part having a first alloy composition;
• (b) providing a second part having a second alloy composition different from the first part;
• (c) connecting and sealing a containment structure to the first part;
• (d) pouring a powder into the containment structure such that the powder is in contact with the first part;
• (e) positioning a portion of the second part in the containment structure such that the second part compresses the powder between the first and second parts and connecting and sealing the second part to the containment structure to form a complete assembly;
• and
• (f) placing the complete assembly in a high pressure containment vessel and performing hot isostatic pressing (HIP) to consolidate the powder and join the first and second parts together.

A method of joining dissimilar metals without welding, comprising the steps of:

• (a) providing a first part having a first alloy composition;
• (b) providing a second part having a second alloy composition different from the first part;
• (c) connecting a containment structure to the first part;
• (d) pouring a first powder capable of joining with the first alloy into the containment structure such that the first powder is in contact with the first part;
• (e) pouring a second powder capable of joining with the first powder and the second alloy such that the second powder is in contact with the first powder;
• (f) positioning a portion of the second part in the containment structure and in contact with the second powder such that the second part compresses the first and second powders between the first and second parts;
• and
• (f) performing hot isostatic pressing (HIP) to consolidate the first and second powders and join the first and second parts together.