The Kinetic diagram of sigma phase and its precipitation hardening effect on 15Cr-2Ni duplex stainless steel

Jianquan Wan; Haihui Ruan; Jianbiao Wang; San-Qiang Shi

doi:10.1016/j.msea.2017.11.079

The Kinetic diagram of sigma phase and its precipitation hardening effect on 15Cr-2Ni duplex stainless steel

Jianquan Wan, Haihui Ruan, Jianbiao Wang, San-Qiang Shi

Research output: Journal article publication › Journal article › Academic research › peer-review

37 Citations (Scopus)

Abstract

The kinetics of sigma phase precipitation at the temperature range of 750–950 °C in a rapidly solidified 15Cr-2Ni-2Al-11Mn resource-saving duplex stainless steel was investigated. After fitting the experimental results with the Avrami equation, the TTT diagram of sigma phase was established. It is found that the precipitation rate of sigma phase maximizes at about 850 °C and that the precipitation hardening effect sharply peaks at about 1.5 vol% sigma phase content, which is obtained by aging at 850 °C for 180 min. With the further increase of sigma phase content from 1.5 vol%, the strength reduces and the ductility increases again.

Original language	English
Pages (from-to)	571-578
Number of pages	8
Journal	Materials Science and Engineering A
Volume	711
DOIs	https://doi.org/10.1016/j.msea.2017.11.079
Publication status	Published - 10 Jan 2018

Keywords

Duplex stainless steel
Mechanical strength
Precipitation hardening
TTT diagram

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2017.11.079

http://hdl.handle.net/10397/95189

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title = "The Kinetic diagram of sigma phase and its precipitation hardening effect on 15Cr-2Ni duplex stainless steel",

abstract = "The kinetics of sigma phase precipitation at the temperature range of 750–950 °C in a rapidly solidified 15Cr-2Ni-2Al-11Mn resource-saving duplex stainless steel was investigated. After fitting the experimental results with the Avrami equation, the TTT diagram of sigma phase was established. It is found that the precipitation rate of sigma phase maximizes at about 850 °C and that the precipitation hardening effect sharply peaks at about 1.5 vol% sigma phase content, which is obtained by aging at 850 °C for 180 min. With the further increase of sigma phase content from 1.5 vol%, the strength reduces and the ductility increases again.",

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AU - Wan, Jianquan

AU - Ruan, Haihui

AU - Wang, Jianbiao

AU - Shi, San-Qiang

PY - 2018/1/10

Y1 - 2018/1/10

N2 - The kinetics of sigma phase precipitation at the temperature range of 750–950 °C in a rapidly solidified 15Cr-2Ni-2Al-11Mn resource-saving duplex stainless steel was investigated. After fitting the experimental results with the Avrami equation, the TTT diagram of sigma phase was established. It is found that the precipitation rate of sigma phase maximizes at about 850 °C and that the precipitation hardening effect sharply peaks at about 1.5 vol% sigma phase content, which is obtained by aging at 850 °C for 180 min. With the further increase of sigma phase content from 1.5 vol%, the strength reduces and the ductility increases again.

AB - The kinetics of sigma phase precipitation at the temperature range of 750–950 °C in a rapidly solidified 15Cr-2Ni-2Al-11Mn resource-saving duplex stainless steel was investigated. After fitting the experimental results with the Avrami equation, the TTT diagram of sigma phase was established. It is found that the precipitation rate of sigma phase maximizes at about 850 °C and that the precipitation hardening effect sharply peaks at about 1.5 vol% sigma phase content, which is obtained by aging at 850 °C for 180 min. With the further increase of sigma phase content from 1.5 vol%, the strength reduces and the ductility increases again.

KW - Duplex stainless steel

KW - Mechanical strength

KW - Precipitation hardening

KW - TTT diagram

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DO - 10.1016/j.msea.2017.11.079

M3 - Journal article

SN - 0921-5093

VL - 711

SP - 571

EP - 578

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

ER -

The Kinetic diagram of sigma phase and its precipitation hardening effect on 15Cr-2Ni duplex stainless steel

Abstract

Keywords

ASJC Scopus subject areas

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