Published July 2021 | Version v1
Journal article Metadata-only

Enhanced mechanical properties of additive manufactured Grade 91 steel

Creators

  • 1. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM (United States)
  • 2. Sigma Division, Los Alamos National Laboratory, Los Alamos, NM (United States)

Description

High temperature stability of the mechanical properties, including creep behavior, are important factors to consider in certifying additive manufactured (AM) steels for reactor operation. AM-Grade 91 steel, tested at RT is shown to possess high yield strength, strain hardening and ductility even after high temperature aging for extended hours. Enhanced creep resistance at 650 C is also evident in the AM Grade 91 steel compared to wrought Grade 91 steel tested at the same conditions. The diverse and complex microstructure of this AM steel allows for both enhanced strength and ductility but increases the ductile-to-brittle transition temperature in these steels.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2021.113888

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2021.113888;
PII
S1359646221001688;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
199
Journal Page Range
vp.
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
53120004
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
COMPARATIVE EVALUATIONS; CREEP; DUCTILE-BRITTLE TRANSITIONS; DUCTILITY; MICROSTRUCTURE; REACTOR OPERATION; STABILITY; STEELS; STRAIN HARDENING; TRANSITION TEMPERATURE; YIELD STRENGTH
Descriptors DEC
ALLOYS; CARBON ADDITIONS; EVALUATION; HARDENING; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; OPERATION; PHYSICAL PROPERTIES; REACTOR LIFE CYCLE; TENSILE PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
Published by Elsevier Ltd on behalf of Acta Materialia Inc.