Physical and mechanical properties of cast 17-4 PH stainless steel

Technical Report · Sun Feb 01 00:00:00 EST 1981

DOI:https://doi.org/10.2172/6607517· OSTI ID:6607517

Rack, H. J.

The physical and mechanical properties of an overaged 17-4 PH stainless steel casting have been examined. The tensile and compressive properties of cast 17-4 PH are only influenced to a slight degree by changing test temperature and strain rate. However, both the Charpy impact energy and dynamic fracture toughness exhibit a tough-to-brittle transition with decreasing temperature - this transition being related to a change in fracture mode from ductile, dimple to cleavage-like. Finally, although the overaged 17-4 PH casting had a relatively low room temperature Charpy impact energy when compared to wrought 17-4 PH, its fracture toughness was at least comparable to that of wrought 17-4 PH. This observation suggests that prior correlations between Charpy impact energies and fracture toughness, as derived from wrought materials, must be approached with caution when applied to cast alloys.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6607517
• Report Number(s): SAND-80-2302; TTC-0161; TRN: 81-006167
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STAINLESS STEEL-17-4PH
FRACTURE PROPERTIES
IMPACT STRENGTH
SHEAR PROPERTIES
SPECIFIC HEAT
THERMAL CONDUCTIVITY
THERMAL DIFFUSIVITY
THERMAL EXPANSION
CASTING
HIGH TEMPERATURE
MEDIUM TEMPERATURE
POISSON RATIO
SCANNING ELECTRON MICROSCOPY
TEMPERATURE EFFECTS
YOUNG MODULUS
ALLOYS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
ELECTRON MICROSCOPY
EXPANSION
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
MICROSCOPY
PHYSICAL PROPERTIES
STAINLESS STEELS
STEELS
THERMODYNAMIC PROPERTIES
360103* - Metals & Alloys- Mechanical Properties
360104 - Metals & Alloys- Physical Properties