850 ℃时效处理对2205双相不锈钢组织与力学性能的影响

材料导报

2019, Vol. 33

Issue (z1): 369-372

金属与金属基复合材料

850 ℃时效处理对2205双相不锈钢组织与力学性能的影响

晁代义¹, 徐仁根², 孙有政¹, 赵巍¹, 吕正风¹, 程仁策¹, 邵文柱³

1 山东南山铝业股份有限公司,龙口 265713
2 烟台大学环境与材料工程学院,烟台 264005
3 哈尔滨工业大学材料科学与工程学院,哈尔滨 15000

Effect of Aging Treatment at 850 ℃ on Microstructures and Mechanical Properties in Duplex Stainless Steel 2205

CHAO Daiyi¹, XU Rengen², SUN Youzheng¹, ZHAO Wei¹, LYU Zhengfeng¹, CHENG Rence¹, SHAO Wenzhu³

1 Shandong Nanshan Aluminum Co., Ltd., Longkou 265713
2 School of Environmental and Materials Engineering, Yantai University, Yantai 264005
3 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150006

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摘要 6
本文研究了在850 ℃时效不同时间对2205双相不锈钢组织及力学性能的影响,并对其断口进行分析。结果表明:经850 ℃时效后σ相首先在δ/γ相界和晶界处析出,并随时效时间延长,σ相不断向铁素体方向长大并且含量不断增加。σ相的含量与抗拉强度、延伸率以及冲击韧性存在一定的线性关系。断口形貌由时效初期的韧窝为主,到时效60 min后解理+韧窝型断口,到240 min几乎完全解理断裂,表明材料的韧性明显降低。

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	晁代义
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	邵文柱

关键词: 双相不锈钢时效时间力学性能线性关系

Abstract: The influence of aging treatment at 850 ℃ on microstructure and properties in duplex stainless steel 2205 was studied and the fracture morphology as analyzed. The results showed that the σ-phase was first appeared at δ/γ phase boundary and δ-phase after 850 ℃ aging treatment. The σ-phase continuously grew up into the direction of the ferrite and the volume fraction was increasing with aging time. The linear was existed between tensile strength, elongation, impact toughness and the volume fraction of σ-phase. In the early aging time, the dimples were found on the fracture surface, and then grew into the local cleavage with dimples areas after aging 60 min, until to aging for 240 min the fracture surface was almost cleavage fracture. The results indicated that the toughness of the material is reduced significantly.

Key words: duplex strainless steel aging time mechanical property linear relationship

出版日期: 2019-05-25 发布日期: 2019-07-05

ZTFLH:

TG142.71

作者简介: 晁代义,2013年6月毕业于烟台大学,获得工学硕士学位。2011年3月到2013年4月在哈尔滨工业大学做联合培养,期间主要研究领域为不锈钢及铝合金热处理工艺。以第一作者在国内外学术期刊发表论文3篇,参与发表核心期刊4篇,SCI文章1篇。现就职于山东南山铝业股份有限公司研究院,主要从事不锈钢及高强铝合金热处理及变形工艺研究。cdy19861226@163.com

引用本文:

晁代义, 徐仁根, 孙有政, 赵巍, 吕正风, 程仁策, 邵文柱. 850 ℃时效处理对2205双相不锈钢组织与力学性能的影响[J]. 材料导报, 2019, 33(z1): 369-372.
CHAO Daiyi, XU Rengen, SUN Youzheng, ZHAO Wei, LYU Zhengfeng, CHENG Rence, SHAO Wenzhu. Effect of Aging Treatment at 850 ℃ on Microstructures and Mechanical Properties in Duplex Stainless Steel 2205. Materials Reports, 2019, 33(z1): 369-372.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2019/V33/Iz1/369

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