Mechanical properties and microstructure of hot isostatically pressed HP9-4-20 steel powder
Hot Isostatic Pressing (HIP) is a relatively new technique in which fully dense near-net-shape parts can be produced by the consolidation of metallic powders at high temperatures (approx. 900 to 1200/sup 0/C) and high pressures (15 to 30 KSI). One material which may beneficially utilize the first two advantages of HIP (the materials and machining savings) is HP9-4-20, a high strength martensitic steel. This steel offers a very attractive combination of strength, toughness, and weldability. Unfortunately, because of its rather high alloy content (9 pct. Ni and 4 pct. Co), HP9-4-20 is quite expensive. An investigation of the mechanical properties and microstructures that are obtained by the HIPing of HP9-4-20 steel powder is described.
- Research Organization:
- Sandia National Labs., Livermore, CA (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6292027
- Report Number(s):
- SAND-81-8229; ON: DE81028685
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
MARTENSITE
HOT PRESSING
MECHANICAL PROPERTIES
MICROSTRUCTURE
FABRICATION
POWDER METALLURGY
ALLOYS
CARBON ADDITIONS
CRYSTAL STRUCTURE
IRON ALLOYS
MATERIALS WORKING
METALLURGY
PRESSING
360101* - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties