STUDY ON FRACTURE TOUGHNESS OF HEAT AFFECTED ZONE OF STRUCTURAL STEEL MEMBER AFFECTED BY WELD HEAT INPUT
نویسندگان
چکیده
منابع مشابه
Effect of Heat Input on the Weld Metal Toughness of Chromium-Molybdenum Steel
An attempt has been made to determine the strength and impact properties of Cr-Mo steel weld and base materials by varying the current during manual metal arc welding. Toughness over a temperature range from -32 to 100°C of base, heat affected zone (HAZ) and weld zones at three current settings are made. It is observed that the deterioration in notch toughness at any zone with the temperature d...
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Repair welding is not used enough in the industry 1 . One of the reasons for this lies in the insufficient and unrealiable knowledge in many segments of this area. A very important part is having appropriate knowledge of metallurgical processes in heating of the base material 2-4 . Unsuitable heating deteriorates the microstructure as it reduces toughness and fracture behaviour of the weld 5 . ...
متن کاملHeat affected zone microstructures and their influence on toughness in two microalloyed HSLA steels
Microstructures and Charpy impact properties have been examined in two microalloyed steels following heat treatments to simulate weld heat affected zone (HAZ) structures over a range of heat input conditions, characterised by the cooling time from 800 to 500 !C (Dt8/5). The base materials were low carbon structural steel plates microalloyed with vanadium and nitrogen (V–N) and niobium (Nb), res...
متن کاملInvestigation of the effect of heat input on the properties of HSLA 100 steel weld joints produced by SMAW process
The microstructure and mechanical properties of HSLA-100 steel weld joints was investigated. Welding with three heat input of 0.820, 1.176 and 1.392 kJ / mm was performed using E12018 electrode. Microstructural studies were performed using scanning electron and optical microscopes. The mechanical properties of welded joints were evaluated by impact and microhardness tests. Microstructural studi...
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ژورنال
عنوان ژورنال: Doboku Gakkai Ronbunshu
سال: 2001
ISSN: 0289-7806,1882-7187
DOI: 10.2208/jscej.2001.689_19