[1]毕宗岳,等.16Cr奥氏体不锈钢高频焊接参数对焊缝组织性能的影响[J].焊管,2016,39(8):1-6.[doi:10.19291/j.cnki.1001-3938.2016.08.001]
 Effect of Cr Austenite Stainless Steel High Frequency Welding Parameters on Weld Microstructure and Properties.[J].,2016,39(8):1-6.[doi:10.19291/j.cnki.1001-3938.2016.08.001]
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16Cr奥氏体不锈钢高频焊接参数对焊缝组织性能的影响
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
39
期数:
2016年第8期
页码:
1-6
栏目:
试验与研究
出版日期:
2016-08-28

文章信息/Info

文章编号:
10.19291/j.cnki.1001-3938.2016.08.001
作者:
毕宗岳1 2 3严培林1余 晗2 3汪海涛2 3
1. 西安石油大学 材料科学与工程学院, 西安 710065;
2. 国家石油天然气管材工程技术研究中心, 陕西 宝鸡 721008;
3. 宝鸡石油钢管有限责任公司, 陕西 宝鸡 721008
Author(s):
Effect of 16Cr Austenite Stainless Steel High Frequency Welding Parameters on Weld Microstructure and Properties
1. School of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China;
2. Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods, Baoji 721008, Shaanxi, China;
3. Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, Shaanxi, China
关键词:
16Cr不锈钢高频焊接焊接工艺显微组织力学性能
Keywords:
16Cr stainless steel high frequency welding welding technology microstructure mechanical properties
分类号:
TG456.9
DOI:
10.19291/j.cnki.1001-3938.2016.08.001
文献标志码:
A
摘要:
为了分析16Cr不锈钢高频焊接参数对焊缝组织性能的影响,通过光学显微镜(OM)、扫描电镜(SEM)和拉伸、弯曲试验,分析了不同高频焊接参数下1Cr17Mn6Ni5N不锈钢(以下简称16Cr不锈钢)焊缝组织与性能的变化情况。结果表明:16Cr奥氏体不锈钢高频焊随着焊接速度的增加,焊缝成形性能变好;焊缝中δ铁素体的含量随焊接热输入的增加先增后减,同时伴随σ脆性相析出;对于壁厚3.4 mm的16Cr奥氏体不锈钢,当焊接速度为10 m/min、焊接热输入为2.9 kJ/cm、并配以适当的挤压力和开口角时,焊缝成形及焊接接头硬度匹配良好,且焊缝抗拉强度接近母材抗拉强度,焊缝显微组织以奥氏体+δ铁素体为主,但由于焊缝存在大量氧化物夹杂,焊接接头韧性较差。
Abstract:
In order to analyze the effect of 16Cr stainless steel high frequency welding parameter on weld microstructure and properties, under the different high frequency welding(HFW) parameters,the change of weld microstructure and properties of 16Cr stainless steel were studied by optical microscope(OM), scanning electron microscope(SEM) tensile test and bending test. The results showed that the weld formability of 16Cr austenitic stainless steel becomes better with the increase of welding speed. The content of δ-ferrite in weld show a trend of decrease after an initial increase with the increasing of welding heat input,accompanied by brittle σ-phase precipitation. The weld of 3.4 mm thickness 16Cr austenitic stainless steel has good formability,when welding speed about 10 m/min,welding heat input 2.9 kJ/cm, and with appropriate pressing force and the opening angle. The welded joints have good matching hardness and the weld tensile strength is close to the base material tensile strength. The microstructure of weld is mainly composed of austenite and δ-ferrite. But the welded joints have poor toughness, because of the oxide inclusions in weld.

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备注/Memo

备注/Memo:
收稿日期: 2016-03-23
作者简介: 毕宗岳(1962—),男,陕西宝鸡人,教授,高级工程师,主要从事管材开发及焊接技术研究工作。
更新日期/Last Update: