Year: 1982
Type: article
Abstract: An algorithm using a hydrogen diffusion theory, which can calculate the hydrogen concentration distribution in a multipass welded joint under various welding conditions, is introduced and referred to the result of hydrogen measurement in multipass welded joints.In order to obtain the welding conditions such as the necessity of a post-heating employment for the prevention of hydrogen-induced weld metal transeverse cracking, the algorithm is modified and the usefulness of this algorithm is confirmed from a result of restraint-type multipass weld cracking tests.It is also found that the diffusible hydrogen concentration measured by the method such as JIS Z 3116 is approximately 80 % of the initial hydrogen concentration just after welding (Ho), and that the maximum hydrogen concentration in a multipass welded joint (Hmax) seems to be less than Ho.
Language: Japanese
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4237198527