Topic
Weldability
About: Weldability is a research topic. Over the lifetime, 7922 publications have been published within this topic receiving 63140 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, the microstructure, mechanical properties and weld hot cracking behavior of a cast Al-Mg-Sc alloy containing 0.17 wt.% Sc were compared with those of a Sc-free alloy of similar chemical composition.
218 citations
TL;DR: In this article, a detailed review of welding and joining processes applied to NiTi, in similar and dissimilar combinations considering both fusion and solid-state processes, is presented, and a special section is devoted to this technique.
211 citations
TL;DR: In this article, the ultrasonic welding technique for joining carbon fiber reinforced thermoplastic composites (CFRP) with sheet metals like aluminium alloys or aluminium-plated steels is described.
Abstract: The ultrasonic welding technology is an innovative method to produce hybrid joints for multi-material components. The investigations described in this paper were carried out using the ultrasonic metal welding technique for joining carbon fibre reinforced thermoplastic composites (CFRP) with sheet metals like aluminium alloys or aluminium-plated steels. The achievable mechanical properties as a function of the process parameters are presented. Additionally, microscopic investigations of the bonding zone are discussed. One important advantage of ultrasonic metal welding is the possibility to realise a direct contact between the load bearing fibres of the reinforced composite and the metallic surface without destroying the carbon fibres.
200 citations
15 Nov 2000-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, analytical and numerical models of linear friction welding of Ti6Al4V (numbers indicate wt%) are established to predict temperature rises during the initial phase of the process, which is of importance in forming sound welds.
Abstract: Analytical and numerical models of linear friction welding of Ti6Al4V (numbers indicate wt.%) are established to predict temperature rises during the initial phase of the process, which is of importance in forming sound welds. Both model predictions are compared with experimental data. The numerical model is used to explain the physical conditions that control the ability to weld under certain process conditions. The effects of the exothermic reaction of titanium with oxygen during the extrusion phase are also discussed.
188 citations
TL;DR: In this article, the welding metallurgy of HASTELLOY* alloys C-4, C-22, and C-276 has been determined, and an equivalent chemistry model is proposed to account for the microstructures observed in each alloy's weld metal.
Abstract: The welding metallurgy (solidification and solid state transformations) of HASTELLOY* Alloys C-4, C-22, and C-276 has been determined. Varestraint hot-cracking tests performed on commercial alloys revealed a weldability ranking as follows: C-4 > C-22 > C-276. All alloys would be expected to have good weldability, with Alloy C-4 having a very low hot-cracking tendency, comparable to 304L stainless steel. Microstructures of gas-tungsten-arc welds of these alloys have been characterized by scanning electron microscopy and analytical electron microscopy. Intermetallic secondary solidification constituents have been found associated with weld metal hot cracks in Alloys C-276 and C-22. In Alloy C-276, this constituent is a combination ofP and ώ phases, and in Alloy C-22, this constituent is composed of σ,P, and ώ phases. With phase composition data obtained by AEM techniques and available ternary (Ni-Cr-Mo) phase diagrams, an equivalent chemistry model is proposed to account for the microstructures observed in each alloy's weld metal.
185 citations