TWI Industrial Member Report Summary 476/1993
By A J Sturgeon, S B Dunkerton, T J B Neville
The diffusion bonding of a medium carbon (0.4%) steel by hot isostatic pressing (HIP) has been investigated using two different procedures for encapsulation: conventional TIG welded can and electron beam sealing. The bond quality produced by each encapsulation method was examined and compared in terms of room temperature Charpy fracture energy and joint microstructure. The presence of inclusions along the joint line was noted and their composition examined. Further comparison with conventional uniaxial diffusion bonds was made.