Influences of HfC particles on microstructure, mechanical properties and ablation resistance at elevated temperature of Mo-15W-HfC alloys

Lilin Yang; Qifu Zhang; Zhiyong He; Xiaogang Li

doi:10.1016/j.ijrmhm.2017.05.001

Influences of HfC particles on microstructure, mechanical properties and ablation resistance at elevated temperature of Mo-15W-HfC alloys

Lilin Yang^*
, Qifu Zhang
, Zhiyong He
, Xiaogang Li

^*Corresponding author for this work

China Iron and Steel Research Institute Group
University of Science and Technology Beijing

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

24 Scopus citations

Abstract

The Mo-15W alloys with different HfC addition were prepared by using powder metallurgy technology. The effect of HfC particles on the mechanical properties and ablation resistance of Mo-15W-HfC alloys were also investigated. The results indicated that the effect of HfC particles on the Mo-W-HfC sintered alloys is very small, but it can obviously improve the micro-hardness and the ultimate tensile strength of rolled alloys. The alloy containing 1.0%wt. HfC in rolled condition delivers the highest ultimate tensile strength both at room temperature (~ 1252 MPa) and at 1250 °C (~ 500 MPa), and shows the best overall performance. The ablation tests show that the HfC particles will form an HfO₂ film to prevent the Mo-15W matrix from further ablative attack at the ablation temperature.

Original language	English
Pages (from-to)	56-67
Number of pages	12
Journal	International Journal of Refractory Metals and Hard Materials
Volume	67
DOIs	https://doi.org/10.1016/j.ijrmhm.2017.05.001
State	Published - Sep 2017
Externally published	Yes

Keywords

Ablation resistance
HfC particles
Mechanical properties
Mo-W-HfC alloys

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10.1016/j.ijrmhm.2017.05.001

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@article{9484223a8c754c56ae9148dafa4a0336,

title = "Influences of HfC particles on microstructure, mechanical properties and ablation resistance at elevated temperature of Mo-15W-HfC alloys",

abstract = "The Mo-15W alloys with different HfC addition were prepared by using powder metallurgy technology. The effect of HfC particles on the mechanical properties and ablation resistance of Mo-15W-HfC alloys were also investigated. The results indicated that the effect of HfC particles on the Mo-W-HfC sintered alloys is very small, but it can obviously improve the micro-hardness and the ultimate tensile strength of rolled alloys. The alloy containing 1.0\%wt. HfC in rolled condition delivers the highest ultimate tensile strength both at room temperature (\textasciitilde{} 1252 MPa) and at 1250 °C (\textasciitilde{} 500 MPa), and shows the best overall performance. The ablation tests show that the HfC particles will form an HfO2 film to prevent the Mo-15W matrix from further ablative attack at the ablation temperature.",

keywords = "Ablation resistance, HfC particles, Mechanical properties, Mo-W-HfC alloys",

author = "Lilin Yang and Qifu Zhang and Zhiyong He and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = sep,

doi = "10.1016/j.ijrmhm.2017.05.001",

language = "英语",

volume = "67",

pages = "56--67",

journal = "International Journal of Refractory Metals and Hard Materials",

issn = "0263-4368",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Influences of HfC particles on microstructure, mechanical properties and ablation resistance at elevated temperature of Mo-15W-HfC alloys

AU - Yang, Lilin

AU - Zhang, Qifu

AU - He, Zhiyong

AU - Li, Xiaogang

PY - 2017/9

Y1 - 2017/9

N2 - The Mo-15W alloys with different HfC addition were prepared by using powder metallurgy technology. The effect of HfC particles on the mechanical properties and ablation resistance of Mo-15W-HfC alloys were also investigated. The results indicated that the effect of HfC particles on the Mo-W-HfC sintered alloys is very small, but it can obviously improve the micro-hardness and the ultimate tensile strength of rolled alloys. The alloy containing 1.0%wt. HfC in rolled condition delivers the highest ultimate tensile strength both at room temperature (~ 1252 MPa) and at 1250 °C (~ 500 MPa), and shows the best overall performance. The ablation tests show that the HfC particles will form an HfO2 film to prevent the Mo-15W matrix from further ablative attack at the ablation temperature.

AB - The Mo-15W alloys with different HfC addition were prepared by using powder metallurgy technology. The effect of HfC particles on the mechanical properties and ablation resistance of Mo-15W-HfC alloys were also investigated. The results indicated that the effect of HfC particles on the Mo-W-HfC sintered alloys is very small, but it can obviously improve the micro-hardness and the ultimate tensile strength of rolled alloys. The alloy containing 1.0%wt. HfC in rolled condition delivers the highest ultimate tensile strength both at room temperature (~ 1252 MPa) and at 1250 °C (~ 500 MPa), and shows the best overall performance. The ablation tests show that the HfC particles will form an HfO2 film to prevent the Mo-15W matrix from further ablative attack at the ablation temperature.

KW - Ablation resistance

KW - HfC particles

KW - Mechanical properties

KW - Mo-W-HfC alloys

UR - https://www.scopus.com/pages/publications/85019422881

U2 - 10.1016/j.ijrmhm.2017.05.001

DO - 10.1016/j.ijrmhm.2017.05.001

M3 - 文章

AN - SCOPUS:85019422881

SN - 0263-4368

VL - 67

SP - 56

EP - 67

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

ER -

Influences of HfC particles on microstructure, mechanical properties and ablation resistance at elevated temperature of Mo-15W-HfC alloys

Abstract

Keywords

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