Accession Number : AD0636683

Title :   STUDY OF THE TRANSFORMATIONAL CHARACTERISTICS AND THE WELDABILITY OF HY-80 STEEL.

Descriptive Note : Quarterly progress rept. 1 Mar-1 Jun 62.

Corporate Author : RENSSELAER POLYTECHNIC INST TROY N Y

Report Date : 01 JUN 1962

Pagination or Media Count : 16

Abstract : Work was directed toward: (1) Completion of the continuous cooling transformation diagram for the HY-80 rich analysis. (2) Investigation of cold-cracking behavior of HY-80 rich analysis by electrolytic charging of hydrogen into notched tensile specimens previously treated using the R.P.I. synthetic specimen technique to produce a grain coarsened structure similar to that observed in a weld heat affected zone. (3) Determination of the hot ductility behavior of HY-80 rich analysis (crack sensitive history), HY-80 lean analysis (crack sensitive history). (4) Examination of the short time stress-rupture behavior of the four steels mentioned above in the grain-coarsened condition, both at elevated temperature (1900F) and at commonly used tempering temperatures. (5) Studies of the impact properties of specimens synthetically treated to produce a grain-coarsened heat-affected zone structure and then furnace stress-relieved for 1 hour at various temperatures. (Author)

Descriptors :   (*STEEL, *WELDING), TRANSFORMATIONS, FRACTURE(MECHANICS), DUCTILITY, RUPTURE, STRESSES, TEMPERING, NOTCH SENSITIVITY, BRITTLENESS

Subject Categories : Metallurgy and Metallography
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE