Influence of Two-Phase Region Heat Treatment on Cryogenic Toughness in 9Ni Steel

doi:10.3696/j.issn.1672-6952.2010.02.008

Journal of Liaoning Petrochemical University ›› 2010, Vol. 30 ›› Issue (2): 26-28.DOI: 10.3696/j.issn.1672-6952.2010.02.008

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Influence of Two-Phase Region Heat Treatment on Cryogenic Toughness in 9Ni Steel

GUO Kui-wen¹, ZHU Jian¹, WANG Bing-xin^2*

1.Fushun Special Equipment Supervision Test Institute, Fushun Liaoning 113006, P.R.China;
2.School of Mechanical Engineering，Liaoning Shihua University,Fushun Liaoning 113001, P.R.China

Received:2009-10-12 Published:2010-06-25 Online:2017-07-05

两相区热处理对9Ni钢低温韧性的影响

郭魁文1,朱健1,王秉新2*

1.抚顺市特种设备监督检验研究所,辽宁抚顺113006;2.辽宁石油化工大学机械工程学院,辽宁抚顺113001

作者简介::郭魁文(1954-),男,辽宁抚顺市,高级工程师。

Abstract

Abstract:

The effect of process parameters for intercritical heat treatment (IHT) on the microstructure and low-temperature toughness in 9Ni steel were investigated by means of SEM and XRD, etc. The experimental results show that intermediate quenching temperature and tempering temperature have obvious influence on cryogenic toughness. The higher or lower heat treatment temperature brings about the decrease in impact toughness. The reversed austenite distributes more dispersively and homogeneously, and much precipitates in specimens treated by IHT process compared with those treated by quenching and tempering process.

Key words: 9Ni steel , Heat treatment , , Low-temperature toughness , Reversed austenite

摘要： 采用扫描电镜、X射线衍射仪等分析手段研究了两相区热处理工艺参数对9Ni钢组织和低温韧性的
影响。结果表明,中间淬火温度及回火温度对低温韧性有显著的影响,温度过高和过低都会造成低温韧性的降低。
同调质工艺相比,经两相区热处理后,回转奥氏体分布更加弥散、均匀,且析出数量增加。

关键词: 9Ni钢 , 热处理 , 低温韧性 , 回转奥氏体

GUO Kui-wen, ZHU Jian, WANG Bing-xin. Influence of Two-Phase Region Heat Treatment on Cryogenic Toughness in 9Ni Steel[J]. Journal of Liaoning Petrochemical University, 2010, 30(2): 26-28.

郭魁文,朱健,王秉新. 两相区热处理对9Ni钢低温韧性的影响[J]. 辽宁石油化工大学学报, 2010, 30(2): 26-28.

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Influence of Two-Phase Region Heat Treatment on Cryogenic Toughness in 9Ni Steel

两相区热处理对9Ni钢低温韧性的影响

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