A study on stress corrosion cracking of explosive plugged part.

概要

論文の詳細を見る
Studies on the stress corrosion cracking of explosive plugged part are conducted. SUS 304 stainless steel is used as testing material.The distribtion of residual stress in plug and tube plate after plugging is obtained. The effect of residual stress on the stress corrosion cracking is studied. Residual stress in tube plate near the plug is compressive and stress corrosion cracking dose not occur in the tube plate there, and it occurs on the inner surface of plug because of residual tensile stress in axial direction of the plug.Stress corrosion test in MgCl2 solution under constant load is conducted.The susceptibility to stress corrosion cracking of the explosive bonded boundary is lower than that of base metal because of greater resistance to plastic deformation.Stress corrosion test in high temperature and high pressure pure water is also conducted by means of static type of autoclave but stress corrosion cracking does not occur under the testing condition used.
一般社団法人日本高圧力技術協会の論文