A Study of the Charpy v-Notch Impact Test

Dimensional changes and the development of cracking in the Charpy V-notch impact test have been studied using a low energy blow technique. Notch opening, angle of bend, notch root contraction and lateral expansion are shown to be proportional to the energy of the low blow which does not cause complete fracture and to be relatively independent of...

The effect of heat input and post-weld heat treatment on mild and low alloy steel submerged arc weld deposits

Submerged arc welds were prepared in quenched and tempered steel plates using a mild steel wire, two low alloy steel wires, and commercially available fluxes. Heat inputs of 1.2, 2.2, and 4.3 KJ/mm were used for each wire/flux combination and in each case the preheat/ interpass temperature was maintained within the range 120 - 150º C. Sections...

Simulated weld heat affected zone structures and properties of HY 80 low alloy steel

Single and double thermal cycle simulation of heat affected zone (HAZ) structures has been used to study the structural and property changes produced by submerged arc welding of HY 80 steel. The effectiveness of the temper bead technique and post-weld heat treatment at 650°C have also been examined, Marked degradation of impact properties occurs...

Effect of welding and post-weld heat treatment on Ducol W30

Notch toughness, tensile and hardness properties of a normalised and tempered Mn-Cr-Mo-V steel have been determined after thermal cycling to 1275º C in simulation of thermal cycles experienced in the coarse grained region of the heat affected zone (HAZ). The metallurgical structure was investigated by means of optical microscopy and electron...

Effect of welding and post-weld heat treatment on QT 35 steel

A simulation technique has been employed to exannine the structures and properties of the heat affected zone in single and multipass submerged arc welds in QT 35 steel fora range of heat inputs i.e. 1.2, 2.1, and 4.2 kJ/mm (30, 54, and 108 kJ/in). Mechanical properties were assessed using Charpy V-notch, tensile and hardness tests and related to...

The weld heat-affected zone notch-impact properties of a semi-killed C - Mn steel and a fully killed aluminium grain-refined C - Mn steel

Structures representative of the visible weld heat-affected zone (HAZ) of a semi-killed C - Mn steel and a fully killed and normalised aluminium grain - refined C - Mn steel have been produced by means of a simulation technique. The Charpy V - notch impact properties have been assessed and related to microstructure. The only significant...

The structure and properties of the weld heat affected zone in 2¼% chromium - 1% molybdenum steels

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

The weld heat affected zone structure and properties of QT 35 steel

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

The weld heat affected zone structure and properties of two low carbon Mu-Cr-Mo-V steels

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

The weld heat affected zone structure and properties of two mild steels

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.