Dissimilar FSW of immiscible materials: Steel/magnesium

Micro-Study of Dissimilar Welded Materials

The dissimilar joint between aluminum/titanium alloys (Al 6082 and Ti G2) were successfully achieved by CO2 laser welding with a single pass and without filler material using the overlap joint design. Laser welding parameters ranges combinations were experimentally determined using Taguchi approach with the objective of producing welded joint with acceptable welding profile and high quality of ...

Earthquake slip between dissimilar poroelastic materials

[1] A mismatch of elastic properties across a fault induces normal stress changes during spatially nonuniform in-plane slip. Recently, Rudnicki and Rice showed that similar effects follow from a mismatch of poroelastic properties (e.g., permeability) within fluid-saturated fringes of damaged material along the fault walls; in this case, it is pore pressure on the slip plane and hence effective ...

Friction Stir Welding of Dissimilar Materials: An Overview

AFRL-OSR-VA-TR-2015-0213 Heterointegration of Dissimilar Materials

An in-situ investigation of the interface evolution during MBE deposition of SrTiO3 on Si has been undertaken using x-ray photoelectron spectroscopy. This study revealed that the critical parameter to control the oxide/semiconductor interface is the incident oxygen during nucleation. Increase in oxygen leads to the formation of interfacial SiO2 even though the surface as monitored by RHEED rema...

Control of Welding Residual Stress for Dissimilar Laser Welded Materials

The most common problem of welding dissimilar metals (DMWs) with respect to residual stresses is the differences in the coefficient of thermal expansion and heat conductivity of the two welded metals. In the present work, a CO2 continuous laser welding process was successfully applied and optimized for joining a dissimilar AISI 316 stainless steel and low carbon steel plates. The Taguchi approa...