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Development of Ultra-High Strength, Temper-Resistant Steels Designed for Improvement of Fatigue Properties Through Relief of Residual Stress.

AD690622

Publication Date	1959
Personal Author	Nudelman, H. B.; Sheehan, J. P.
Page Count	32
Abstract	Various experimental alloy steels were investigated with reference to temper resistance, which was evaluated on the basis of hardness measurements. Molybdenum was the major alloying element used for improving temper resistance in steels having carbon contents in the range of 0.30 to 0.55 per cent. Chromium, vanadium, and tungsten were utilized in minor amounts as alloying elements. It was found that austenitizing at 2200F was required to dissolve all of the carbides and provide a fully martensitic structure upon oil quenching or air cooling. Alloys were developed capable of maintaining hardnesses of Rc 40 to Rc 59 after tempering for one hour in the range of 1250F to 1300F. (Author)
Keywords	Steel Stress relieving Fatigue(Mechanics) Tempering Hardness Molybdenum alloys Chromium alloys Vanadium alloys Tungsten alloys Hot working High strength steels
NTIS Subject Category	71J - Iron & Iron Alloys 94G - Manufacturing Processes & Materials Handling
Corporate Authors	Armour Research Foundation Chicago Ill
Document Type	Technical Report
Title Note	Technical rept. 1 May 58-28 Feb 59.
NTIS Issue Number	196918
Contract Number	AF 33(616)-3299

Development of Ultra-High Strength, Temper-Resistant Steels Designed for Improvement of Fatigue Properties Through Relief of Residual Stress.

Development of Ultra-High Strength, Temper-Resistant Steels Designed for Improvement of Fatigue Properties Through Relief of Residual Stress.
AD690622

Publication Date	1959
Personal Author	Nudelman, H. B.; Sheehan, J. P.
Page Count	32
Abstract	Various experimental alloy steels were investigated with reference to temper resistance, which was evaluated on the basis of hardness measurements. Molybdenum was the major alloying element used for improving temper resistance in steels having carbon contents in the range of 0.30 to 0.55 per cent. Chromium, vanadium, and tungsten were utilized in minor amounts as alloying elements. It was found that austenitizing at 2200F was required to dissolve all of the carbides and provide a fully martensitic structure upon oil quenching or air cooling. Alloys were developed capable of maintaining hardnesses of Rc 40 to Rc 59 after tempering for one hour in the range of 1250F to 1300F. (Author)
Keywords	Steel Stress relieving Fatigue(Mechanics) Tempering Hardness Molybdenum alloys Chromium alloys Vanadium alloys Tungsten alloys Hot working High strength steels
NTIS Subject Category	71J - Iron & Iron Alloys 94G - Manufacturing Processes & Materials Handling
Corporate Authors	Armour Research Foundation Chicago Ill
Document Type	Technical Report
Title Note	Technical rept. 1 May 58-28 Feb 59.
NTIS Issue Number	196918
Contract Number	AF 33(616)-3299