Cold cracking in electron beam welding of carbon and low alloy steels - A study on electron beam welding - (I)
Year: 1986
Type: article
Abstract: The authors researched cold rcacking in electron beam (EB) welding by performing hardness and cracking tests on 28 different types of carbon and low-alloy steels.Based on the test results, the welding paramteer (PEBW), a factor used to estimate the cold cracking in EB welding, has been determined. The conclusions are summarized as follows;(1) The maximum Hardness Value (HVmax) of the EB weld can be estimated by equation (1).HVmax=(1020⋅C+268)±60…………………………………………………………………(1)where C: the carbon content of the material (wt%)(2) Restraint stress of EB weld can be estimated by equation (2)σw=0.007RF……………………………………………………………………………………(2)where σw: restraint stress (MPa), RF: restraint intensity (N/mm.mm)(3) The cold cracking in EB weld can be predicted by equation (3)HVcr=-0.16rf+750…………………………………………………………………………(3)where Hvcr: the critical hardness value of crack occurrencerf: restraint coefficient (N/mm2·mm)(4) The welding parameter (PEBW) can be determined by equation (4)PEBW=C+l/6375·rf…………………………………………………………………………(4)when Q≤13500J/cm, without preheating; PEBW=0.475
DOI: 10.2207/qjjws.4.131
Authors: Nobuharu Sakabata, Yoshiaki Shibuya, Hiroyuki Nakajima, Setsuji Minehisa
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2994592008