Effect of microstructure on the mechanical properties of a commercial 12Cr-1Mo steel (HT-9)
The microstructure of a commercial 12Cr-1Mo steel (HT-9) and its associated effect on strength and toughness properties is being studied in a continuing program aimed at qualifying the alloy for use in fusion energy machines. Interim results show this alloy is subject to a degree of tempered martensite embrittlement and temper embrittlement. For applications projected for fusion machines at lower temperatures, a new heat treatment (1000/sup 0/C, 1 h, air-cooled followed by 650/sup 0/C tempering) at lower temperatures and shorter times than the vendor-recommended heat treatment has been identified. Microstructural differences between the treatments are discussed, and mechanical properties are correlated. 6 figures.
- Research Organization:
- General Atomic Co., San Diego, CA (USA)
- DOE Contract Number:
- AT03-76ET51011
- OSTI ID:
- 6203777
- Report Number(s):
- GA-A-16389; CONF-810831-57; ON: DE82000082
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of thermal aging on 12Cr-1Mo steel
Microstructural characterization of autogenous GTA welds in a 12Cr-1Mo-0. 3V steel
Related Subjects
360103* -- Metals & Alloys-- Mechanical Properties
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOY-HT-9
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CORRELATIONS
CRYSTAL STRUCTURE
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
ROCKWELL HARDNESS
STEELS
THERMONUCLEAR REACTOR MATERIALS