Characterization of Hot Deformation Behavior and Processing Map of Powder Metallurgical High-Tungsten Steel

Anjin Liu; Lin Wang; Xingwang Cheng; Zhiping Xiong; Zixuan Ning

Characterization of Hot Deformation Behavior and Processing Map of Powder Metallurgical High-Tungsten Steel

Anjin Liu
, Lin Wang^*
, Xingwang Cheng
, Zhiping Xiong
, Zixuan Ning

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

2 Citations (Scopus)

Abstract

Hot deformation behavior of powder metallurgical high tungsten alloy steel was investigated by Gleeble thermal simulator in a temperature range of 900~1100℃ and a strain rate range of 0.001~1 s^-1. The results show that the flow stress decreases with the decrease of strain rate and the increase of deformation temperature. A constitutive equation is derived with Arrhenius hyperbolic sine function, and a processing map is constructed. The activation energy is 377 kJ/mol. The suitable processing regions are 1000~1100℃/ 0.001~0.01 s^-1. The precipitation of tungsten-rich μ phase occurs during hot deformation process. Microvoids and micro-cracks form in the bulging region of the specimen. The amount of microvoid increases with the increase of strain rate and the decrease of temperature. The μ phase precipitation improves the high temperature strength of the steel.

Translated title of the contribution	粉末冶金高钨合金钢热变形行为与加工图
Original language	English
Pages (from-to)	4201-4208
Number of pages	8
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	50
Issue number	12
Publication status	Published - Dec 2021

Keywords

Constitutive model
Hot deformation behavior
Microstructure
Processing map
Tungsten steel

Cite this

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title = "Characterization of Hot Deformation Behavior and Processing Map of Powder Metallurgical High-Tungsten Steel",

abstract = "Hot deformation behavior of powder metallurgical high tungsten alloy steel was investigated by Gleeble thermal simulator in a temperature range of 900\textasciitilde{}1100℃ and a strain rate range of 0.001\textasciitilde{}1 s-1. The results show that the flow stress decreases with the decrease of strain rate and the increase of deformation temperature. A constitutive equation is derived with Arrhenius hyperbolic sine function, and a processing map is constructed. The activation energy is 377 kJ/mol. The suitable processing regions are 1000\textasciitilde{}1100℃/ 0.001\textasciitilde{}0.01 s-1. The precipitation of tungsten-rich μ phase occurs during hot deformation process. Microvoids and micro-cracks form in the bulging region of the specimen. The amount of microvoid increases with the increase of strain rate and the decrease of temperature. The μ phase precipitation improves the high temperature strength of the steel.",

keywords = "Constitutive model, Hot deformation behavior, Microstructure, Processing map, Tungsten steel",

author = "Anjin Liu and Lin Wang and Xingwang Cheng and Zhiping Xiong and Zixuan Ning",

year = "2021",

month = dec,

language = "English",

volume = "50",

pages = "4201--4208",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

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number = "12",

}

TY - JOUR

T1 - Characterization of Hot Deformation Behavior and Processing Map of Powder Metallurgical High-Tungsten Steel

AU - Liu, Anjin

AU - Wang, Lin

AU - Cheng, Xingwang

AU - Xiong, Zhiping

AU - Ning, Zixuan

PY - 2021/12

Y1 - 2021/12

N2 - Hot deformation behavior of powder metallurgical high tungsten alloy steel was investigated by Gleeble thermal simulator in a temperature range of 900~1100℃ and a strain rate range of 0.001~1 s-1. The results show that the flow stress decreases with the decrease of strain rate and the increase of deformation temperature. A constitutive equation is derived with Arrhenius hyperbolic sine function, and a processing map is constructed. The activation energy is 377 kJ/mol. The suitable processing regions are 1000~1100℃/ 0.001~0.01 s-1. The precipitation of tungsten-rich μ phase occurs during hot deformation process. Microvoids and micro-cracks form in the bulging region of the specimen. The amount of microvoid increases with the increase of strain rate and the decrease of temperature. The μ phase precipitation improves the high temperature strength of the steel.

AB - Hot deformation behavior of powder metallurgical high tungsten alloy steel was investigated by Gleeble thermal simulator in a temperature range of 900~1100℃ and a strain rate range of 0.001~1 s-1. The results show that the flow stress decreases with the decrease of strain rate and the increase of deformation temperature. A constitutive equation is derived with Arrhenius hyperbolic sine function, and a processing map is constructed. The activation energy is 377 kJ/mol. The suitable processing regions are 1000~1100℃/ 0.001~0.01 s-1. The precipitation of tungsten-rich μ phase occurs during hot deformation process. Microvoids and micro-cracks form in the bulging region of the specimen. The amount of microvoid increases with the increase of strain rate and the decrease of temperature. The μ phase precipitation improves the high temperature strength of the steel.

KW - Constitutive model

KW - Hot deformation behavior

KW - Microstructure

KW - Processing map

KW - Tungsten steel

UR - https://www.scopus.com/pages/publications/85124079407

M3 - Article

AN - SCOPUS:85124079407

SN - 1002-185X

VL - 50

SP - 4201

EP - 4208

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 12

ER -

Characterization of Hot Deformation Behavior and Processing Map of Powder Metallurgical High-Tungsten Steel

Abstract

Keywords

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