Strain-controlled Fatigue Behavior Of A Stm A36 And A514 Grade F Steels And 5083-0 Alum.weld Mater.

Author:  Higashida, Burk, Lawrence, Jr.
Source:  Welding Journ., 57, 334s-344s
Doc ID:  1978009
Year of Publication:  1978
Abstract:  
The tensile and strain-controlled fatigue properties of base metal (BM), weld-metal (WM), and heat-affected zone (HAZ) material were determined for weldments of ASTM A36 and A514 grade F steels and 5083-0 aluminum. The mean stress relaxation behavior of these weld materials was also investigated. The HAZ properties were determined from specimens produced using a weld thermal-cycle simulator. the WM properties were obtained using specimens machined from weld metal deposits. For the steel weld materials, the tensile and strain-controlled fatigue properties were found to vary with hardness. The fatigue resistance at lives greater than the transition fatigue life was found to increase as the hardness of the steel weld materials (BM's, WM's, HAZ's) increased. Properties of BM and WM for the 5083-0 aluminum welds did not obey the hardness relationships found for the steels, but the mean stress relaxation behavior of all the weld materials considered was found to be a function of the same material parameters.