Abstract
The grain boundary effect on the strength was evaluated through nanoindentation technique for Fe-0.4C-Cr-Mo steels that were produced by the ausform-tempered (AF) and conventional quench-tempered (QT) processes. A semiquantitative Hall-Petch plot was made to determine the locking parameter k for the two alloys using nanohardness, micro-Vickers hardness, and grain size. The k value for the QT sample is significantly larger than that for the AF sample and is attributed to the film-like carbides on the grain boundaries of the QT sample. The lower k value of the AF sample is one of the factors for the improved delayed fracture property in the AF compared to that of the QT sample.
| Original language | English |
|---|---|
| Pages (from-to) | 1301-1305 |
| Number of pages | 5 |
| Journal | Materials Transactions |
| Volume | 46 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1 2005 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Evaluation of grain boundary effect on strength of Fe-C low alloy martensitic steels by nanoindentation technique. / Li, Jinxu; Ohmura, Takahito; Tsuzaki, Kaneaki.
In: Materials Transactions, Vol. 46, No. 6, 01.06.2005, p. 1301-1305.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Evaluation of grain boundary effect on strength of Fe-C low alloy martensitic steels by nanoindentation technique
AU - Li, Jinxu
AU - Ohmura, Takahito
AU - Tsuzaki, Kaneaki
PY - 2005/6/1
Y1 - 2005/6/1
N2 - The grain boundary effect on the strength was evaluated through nanoindentation technique for Fe-0.4C-Cr-Mo steels that were produced by the ausform-tempered (AF) and conventional quench-tempered (QT) processes. A semiquantitative Hall-Petch plot was made to determine the locking parameter k for the two alloys using nanohardness, micro-Vickers hardness, and grain size. The k value for the QT sample is significantly larger than that for the AF sample and is attributed to the film-like carbides on the grain boundaries of the QT sample. The lower k value of the AF sample is one of the factors for the improved delayed fracture property in the AF compared to that of the QT sample.
AB - The grain boundary effect on the strength was evaluated through nanoindentation technique for Fe-0.4C-Cr-Mo steels that were produced by the ausform-tempered (AF) and conventional quench-tempered (QT) processes. A semiquantitative Hall-Petch plot was made to determine the locking parameter k for the two alloys using nanohardness, micro-Vickers hardness, and grain size. The k value for the QT sample is significantly larger than that for the AF sample and is attributed to the film-like carbides on the grain boundaries of the QT sample. The lower k value of the AF sample is one of the factors for the improved delayed fracture property in the AF compared to that of the QT sample.
UR - http://www.scopus.com/inward/record.url?scp=23644446639&partnerID=8YFLogxK
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U2 - 10.2320/matertrans.46.1301
DO - 10.2320/matertrans.46.1301
M3 - Article
AN - SCOPUS:23644446639
VL - 46
SP - 1301
EP - 1305
JO - Materials Transactions
JF - Materials Transactions
SN - 0916-1821
IS - 6
ER -