Recent developments in the progress of superalloy 718

Journal Article · Mon Jun 01 04:00:00 EDT 1992 · JOM (Journal of the Minerals, Metals and Materials Society); (United States)

DOI:https://doi.org/10.1007/BF03222252· OSTI ID:7166059

Loria, E A

An evaluation is made of the development status of the Ni-base 718 superalloy, in the areas of clean-melt practices, low-cycle fatigue resistance, thermomechanical processing, and alloy optimization. Intergranular cracking remains the weakest link in 718 performance; high crack-growth resistance at 650 C is highly desirable. A homogenization treatment with imposed heating and cooling rates has been shown to control the transformation characteristics of 718. There are strong indications that 718 can be improved through precipitate strengthening. 11 refs.

• OSTI ID: 7166059
• Journal Information: JOM (Journal of the Minerals, Metals and Materials Society); (United States), Journal Name: JOM (Journal of the Minerals, Metals and Materials Society); (United States) Vol. 44:6; ISSN JOMME; ISSN 1047-4838
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360100* -- Metals & Alloys
ALLOYS
CORROSION RESISTANCE
CRACK PROPAGATION
FABRICATION
FATIGUE
HARDENING
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
NICKEL ALLOYS
NICKEL BASE ALLOYS
PERFORMANCE
PRECIPITATION HARDENING
TECHNOLOGY ASSESSMENT
THERMOMECHANICAL TREATMENTS