Abstract
Conventional tungsten heavy alloys (WHAs) fabricated using powder metallurgic method exhibit a much lower strength than ultrahigh strength steels (UHSSs). Here, we first time designed a novel medium heavy alloy (MHA) of 57Ni-37W-5Co-1Ta fabricated using the casting technology. Compared to WHA, this MHA not only largely reduces the difficulty in manufacturing and post working, but also enhances the toughness by ~10 times together with excellent quasi-static and dynamic properties. The superior strength-toughness is attributed to the face-centered cubic (FCC) matrix and/or the nano-sized secondary phases. While the superior dynamic performance is attributed to the widening of adiabatic shear bands (ASBs).
| Original language | English (US) |
|---|---|
| Pages (from-to) | 311-315 |
| Number of pages | 5 |
| Journal | Scripta Materialia |
| Volume | 162 |
| DOIs | |
| State | Published - Mar 15 2019 |
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Keywords
- Dynamic properties
- Impact toughness
- Medium heavy alloys (MHAs)
- Tungsten heavy alloys (WHAs)
- Ultra high strength steels (UHSSs)
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
Cite this
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A novel medium heavy alloy (MHA) with excellent static/dynamic properties and impact toughness. / Li, Y.; Liu, G. Q.; Hu, Xiaobing; Wu, L. H.; Tan, C. W.; Dravid, Vinayak P; Liu, S. Z.
In: Scripta Materialia, Vol. 162, 15.03.2019, p. 311-315.Research output: Contribution to journal › Article
TY - JOUR
T1 - A novel medium heavy alloy (MHA) with excellent static/dynamic properties and impact toughness
AU - Li, Y.
AU - Liu, G. Q.
AU - Hu, Xiaobing
AU - Wu, L. H.
AU - Tan, C. W.
AU - Dravid, Vinayak P
AU - Liu, S. Z.
PY - 2019/3/15
Y1 - 2019/3/15
N2 - Conventional tungsten heavy alloys (WHAs) fabricated using powder metallurgic method exhibit a much lower strength than ultrahigh strength steels (UHSSs). Here, we first time designed a novel medium heavy alloy (MHA) of 57Ni-37W-5Co-1Ta fabricated using the casting technology. Compared to WHA, this MHA not only largely reduces the difficulty in manufacturing and post working, but also enhances the toughness by ~10 times together with excellent quasi-static and dynamic properties. The superior strength-toughness is attributed to the face-centered cubic (FCC) matrix and/or the nano-sized secondary phases. While the superior dynamic performance is attributed to the widening of adiabatic shear bands (ASBs).
AB - Conventional tungsten heavy alloys (WHAs) fabricated using powder metallurgic method exhibit a much lower strength than ultrahigh strength steels (UHSSs). Here, we first time designed a novel medium heavy alloy (MHA) of 57Ni-37W-5Co-1Ta fabricated using the casting technology. Compared to WHA, this MHA not only largely reduces the difficulty in manufacturing and post working, but also enhances the toughness by ~10 times together with excellent quasi-static and dynamic properties. The superior strength-toughness is attributed to the face-centered cubic (FCC) matrix and/or the nano-sized secondary phases. While the superior dynamic performance is attributed to the widening of adiabatic shear bands (ASBs).
KW - Dynamic properties
KW - Impact toughness
KW - Medium heavy alloys (MHAs)
KW - Tungsten heavy alloys (WHAs)
KW - Ultra high strength steels (UHSSs)
UR - http://www.scopus.com/inward/record.url?scp=85057075179&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057075179&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2018.11.036
DO - 10.1016/j.scriptamat.2018.11.036
M3 - Article
VL - 162
SP - 311
EP - 315
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
ER -