焊管2016，Vol.39Issue(8)：1-6,6.DOI:10.19291/j.cnki.1001-3938.2016.08.001
16Cr奥氏体不锈钢高频焊接参数对焊缝组织性能的影响
Effect of 16Cr Austenite Stainless Steel High Frequency Welding Parameters on Weld Microstructure and Properties
毕宗岳 1严培林 2余晗 3汪海涛1
作者信息
- 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
- 折叠
摘要
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.关键词
16Cr不锈钢/高频焊接/焊接工艺/显微组织/力学性能Key words
16Cr stainless steel/high frequency welding/welding technology/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
毕宗岳,严培林,余晗,汪海涛..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):1-6,6.
