A novel medium heavy alloy (MHA) with excellent static/dynamic properties and impact toughness

Y. Li; G. Q. Liu; X. B. Hu; L. H. Wu; C. W. Tan; Vinayak P. Dravid; S. Z. Liu

doi:10.1016/j.scriptamat.2018.11.036

A novel medium heavy alloy (MHA) with excellent static/dynamic properties and impact toughness

Y. Li, G. Q. Liu, X. B. Hu^*, L. H. Wu, C. W. Tan, Vinayak P. Dravid, S. Z. Liu

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

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
Pages (from-to)	311-315
Number of pages	5
Journal	Scripta Materialia
Volume	162
DOIs	https://doi.org/10.1016/j.scriptamat.2018.11.036
Publication status	Published - 15 Mar 2019

Keywords

Dynamic properties
Impact toughness
Medium heavy alloys (MHAs)
Tungsten heavy alloys (WHAs)
Ultra high strength steels (UHSSs)

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10.1016/j.scriptamat.2018.11.036

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title = "A novel medium heavy alloy (MHA) with excellent static/dynamic properties and impact toughness",

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).",

keywords = "Dynamic properties, Impact toughness, Medium heavy alloys (MHAs), Tungsten heavy alloys (WHAs), Ultra high strength steels (UHSSs)",

author = "Y. Li and Liu, {G. Q.} and Hu, {X. B.} and Wu, {L. H.} and Tan, {C. W.} and Dravid, {Vinayak P.} and Liu, {S. Z.}",

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doi = "10.1016/j.scriptamat.2018.11.036",

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T1 - A novel medium heavy alloy (MHA) with excellent static/dynamic properties and impact toughness

AU - Li, Y.

AU - Liu, G. Q.

AU - Hu, X. B.

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)

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DO - 10.1016/j.scriptamat.2018.11.036

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SP - 311

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JO - Scripta Materialia

JF - Scripta Materialia

ER -

A novel medium heavy alloy (MHA) with excellent static/dynamic properties and impact toughness

Abstract

Keywords

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