اخبار و اعلانات

 آمار

تعداد نشریات24
تعداد شماره‌ها851
تعداد مقالات7,575
تعداد مشاهده مقاله13,413,732
تعداد دریافت فایل اصل مقاله11,580,448
. (1393). EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES AND MICROSTRUCTURES IN A 36 REPAIR BUTT WELDMENT. , 38(M2), 431-438. doi: 10.22099/ijstm.2014.2506
. "EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES AND MICROSTRUCTURES IN A 36 REPAIR BUTT WELDMENT". , 38, M2, 1393, 431-438. doi: 10.22099/ijstm.2014.2506
. (1393). 'EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES AND MICROSTRUCTURES IN A 36 REPAIR BUTT WELDMENT', , 38(M2), pp. 431-438. doi: 10.22099/ijstm.2014.2506
. EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES AND MICROSTRUCTURES IN A 36 REPAIR BUTT WELDMENT. , 1393; 38(M2): 431-438. doi: 10.22099/ijstm.2014.2506

EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES AND MICROSTRUCTURES IN A 36 REPAIR BUTT WELDMENT

Iranian Journal of Science and Technology Transactions of Mechanical Engineering
مقاله 12، دوره 38، M2، دی 2014، صفحه 431-438    اصل مقاله (631.32 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22099/ijstm.2014.2506
چکیده
Welding is one of the usual assembling methods with various applications. The
different defects are generated during welding and also in service conditions. After inspection and
identifying the defects, the repairs are applied. Welding repair operation causes the mechanical
properties and the microstructures of weldment to change. In the present work the variations of
yield stress, hardness and microstructures in the A 36 repair butt specimens were investigated by
the experimental study. The welding technique was Tungsten Insert Gas method without using
filler. The specimens were cut from the welded plates using water jet method for avoiding heat
effect during the cutting. The low-carbon steel A 36 thin plate was used to construct the
specimens. This material has numerous applications to construct various structures and parts. The
specifications of specimens and tests were selected according to the standards. The tensile tests
were performed for four numbers of each specimen. The mean of yield stresses in the specimens
were reduced after the repairing through half- thickness of the butt welds. Moreover, the mean of
yield stresses in the specimens after repairing would be decreased if the welding voltage and
current increased. Reduction of the hardness in heat affected zone and variation of the phases and
grain size after repairing were other outcomes from testing on the specimens.
کلیدواژه‌ها
Experimental tests؛ repairing weld؛ gas tungsten arc welding؛ yield stress؛ hardness؛ Microstructures
آمار
تعداد مشاهده مقاله: 3,026
تعداد دریافت فایل اصل مقاله: 3,269


سامانه مدیریت نشریات علمی. قدرت گرفته از سیناوب