Influence of banded structure on the mechanical properties of a high-strength maraging steel

Journal Article · Tue Apr 01 00:00:00 EST 1997 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/s11665-997-0009-0· OSTI ID:477149

Ahmed, M; Salam, I; Hashmi, F H; Khan, A Q ^[1]

---

1. Dr. A.Q. Khan Research Labs., Rawalpindi (Pakistan). Metallurgy Div.

Chemical inhomogeneity results in the formation of banded structure in high-strength maraging steels. Segregation of titanium and molybdenum was found to be the primary cause of banded structure formation. When the concentrations of these elements increased beyond certain critical levels, bands comprising different grain sizes formed. The inclusions existed preferentially along the interface of the bands. A high-temperature homogenization treatment substantially reduced or eliminated the banded structure. The large grain size resulting from the homogenization treatment was subsequently reduced by a grain refinement treatment. The mechanical properties of the steel substantially improved following homogenization and grain refinement.

• Sponsoring Organization: USDOE
• OSTI ID: 477149
• Journal Information: Journal of Materials Engineering and Performance, Vol. 6, Issue 2; Other Information: PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MICROSTRUCTURE
MECHANICAL PROPERTIES
MARAGING STEELS
SEGREGATION
GRAIN REFINEMENT
HEAT TREATMENTS
INCLUSIONS
CHARPY TEST
TENSILE PROPERTIES
FRACTOGRAPHY
EXPERIMENTAL DATA