| 2009 №08 (04) | 2009 №08 (06) |
The Paton Welding Journal, 2009, #8, 21-26 pages
Influence of welding and post-weld heating on structural transformations and properties of HAZ of welded joints on hardening steels
Yu.M. Lebedev
Admiral Makarov National Shipbuilding University, Nikolaev, UkraineAbstract
Experimental investigations of influence of welding and post-weld heating on hardness and impact toughness of simulated high-temperature areas of heat-affected zone (HAZ) of joints on low-carbon high-strength steels and medium-carbon 40Kh steel were carried out. Peculiarities of phase transformations in these steels were studied. It is determined that the most effective is fast post-weld heating of HAZ metal in a temperature interval, corresponding to intercritical interval of AC1-AC3.
Keywords: heat-affected zone, high-strength hardening steels, post-weld heating, diagrams of thermal-kinetic transformation of HAZ austenite, hardness, impact toughness
Received: 02.04.09
Published: 28.08.09
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