真空钎焊对304L不锈钢带材组织与性能的影响  

Effects of Braze Welding on Microstructure and Properties of 304 L Austenitic Stainless Steel

作　　者：薛志强[1] 冯亮[1] 王鹏程[1] 

机构地区：[1]贵州大学材料科学与冶金工程学院,贵州贵阳550003

出　　处：《贵州大学学报（自然科学版）》2012年第1期71-74,共4页Journal of Guizhou University:Natural Sciences

基　　金：贵阳市工业振兴科技计划(筑科合同【20111014-10】号)

摘　　要：采用传统金相、显微硬度、板式拉伸检测方法研究了304 L不锈钢带在真空钎焊前后截面微观组织、显微硬度和抗拉强度的变化情况。本文针对钎焊后晶粒有明显长大倾向、显微硬度有所降低、材料的延伸率变化明显的现象对其机理进行了分析和研究,并提出了工艺参数的改进建议,为其在工业生产中提供了参考依据。Microstructure of section, microhardness and tensile strength of 304 L austenitic stainless steel after vacuum brazing was investigated by using metallographic microscope,the micro-hardness,plate tensile test. This paper analyzed and studied that after braze welding, grain size was obviously bigger than ever, microhardness was lower and the change of elongation rate was obvious , put forward the improvement of the process parameters in the industrial production to provide the reference.

关 键 词：真空钎焊 304L不锈钢带 晶粒度 延伸率 

分 类 号：TG142.71[一般工业技术—材料科学与工程]