Published December 1999 | Version v1
Journal article Metadata-only

Microstructure and mechanical properties in HT9 and HT9M steels for nuclear power plant

Creators

  • 1. KAERI, Taejon (Korea, Republic of)

Description

Microstructure and mechanical properties of HT9 and HT9M steels for Liquid Metal Reactor(LMR) core materials have been investigated. The tempering temperature at which cell structure was formed by rearrangement of dislocations was same in two steels. More carbides were precipitated in HT9 steel due to high carbon content and precipitation of carbides was delayed in HT9M steel. Thus the decrease of hardness with tempering temperature in HT9M steel was lower than that of HT9 steel. The yield strength was decreased, the fine prior austenite grain was formed, and the formation of δ-ferrite was restricted in HT9M steel by decreasing the Cr and carbon content and increasing the Nb content. Thus the impact property of HT9M steel was improved

Additional details

Publishing Information

Journal Title
Journal of the Korean Institute of Metals and Materials
Journal Volume
37
Journal Issue
12
Series
14 refs, 13 figs, 1 tab
Journal Page Range
p. 1487-1493
ISSN
0253-3847

INIS

Country of Publication
Korea, Republic of
Country of Input or Organization
Korea, Republic of
INIS RN
36053806
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
AUSTENITIC STEELS; CHROMIUM; IMPACT STRENGTH; LIQUID METALS; MARTENSITE; MOLYBDENUM; NUCLEAR POWER PLANTS; REACTORS; STEELS; TEMPERING; TENSILE PROPERTIES
Descriptors DEC
ALLOYS; CARBON ADDITIONS; ELEMENTS; FLUIDS; HEAT TREATMENTS; IRON ALLOYS; IRON BASE ALLOYS; LIQUIDS; MECHANICAL PROPERTIES; METALS; NUCLEAR FACILITIES; POWER PLANTS; REFRACTORY METALS; STEELS; THERMAL POWER PLANTS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS