Welded joints of 25Cr-20Ni-2Si austenitic steel in augmented turbopiston engines

摘要

Experimental data are given on prevention of hot cracls in dissimilar welded joints of high-silicon steel 25Cr-20Ni-2Si and steel 10Kh18N10T, as well as nickel alloy KhN65VMTYu. It is shown that alloying of the weld metal with boron compounds in an amount of 0,45...0,80 wt. % leads to an increase in its technological strength.