STUDY OF THE TRANSFORMATIONAL CHARACTERISTICS AND THE WELDABILITY OF HY-80 STEEL.
Quarterly progress rept. 1 Mar-1 Jun 62.
RENSSELAER POLYTECHNIC INST TROY N Y
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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
- Metallurgy and Metallography
- Fabrication Metallurgy