Inconel is a nickel, iron, and cobalt-based alloy developed for applications where 2113 requires excellent mechanical and chemical properties at high temperatures. Inconel 718 is a 5261 precipitation hardening nickel-chromium alloy; the high nickel content of Inconel 600 makes the alloy have a very strong resistance to chloride stress cracking corrosion of 4102 and 1653, and can maintain its high corrosion resistance in the reduced state. And it also has strong corrosion resistance in alkaline solution; Inconel X-750 alloy is mainly nickel-based superalloy with γ, Ti, Nb.phase aging strengthening, etc.
Inconel has a single-phase structure and has similar problems with austenitic stainless steel during welding, such as welding hot cracks, weld pores, and intergranular corrosion of welded joints
Corrosion in the welding zone
When the Ni-Mo alloy passes through the sensitization temperature zone (1200℃～1300℃ and 600℃～900℃), molybdenum-rich phases are precipitated along the grain boundaries, resulting in Mo depleted zones and intergranular corrosion.
Post time: Jan-27-2022