Method for producing Mo-Si-B based alloy, Mo-Si-B based alloy and tool for friction stir welding

摘要

Problem to be solved: to provide a Mo-Si-B based alloy and a Mo-Si-B based alloy having superior high temperature strength characteristics, a method of producing a Mo-Si-B alloy, and a tool for friction stir welding applicable to a Ni base superalloy and a Ti alloy.Solution: Mo having a content of 60 atomic% or more and 75 atomic% or less, a Si of 1.7 atomic% or more and 6.7 atomic% or less, a B of 3.3 atomic% or more of 13.3 atomic% or less, a Ti of 1.0 atomic% or more of 14.0 atomic% or less, and a Zr atom of 1.0 atomic% or more of 14.0 atomic% or less, and 5.0 atomic% of It has a value of not more than 15.0 atomic% or less C.Diagram