超声振动拉伸下低碳钢的力学性能试验研究(英文)  

Experimental Study on Mechanical Properties of Low Carbon Steel with Ultrasonic Vibration Tensile

作　　者：程雪利[1] 赵明利[2] 陈丽红[3] 

机构地区：[1]河南机电高等专科学校机械工程系,河南新乡453000 [2]河南理工大学机械与动力工程学院,河南焦作454000 [3]北方自动控制技术研究所,太原030006

出　　处：《机床与液压》2013年第12期117-122,共6页Machine Tool & Hydraulics

摘　　要：对低碳钢进行了超声振动拉伸试验,证明了低碳钢在有超声和无超声拉伸时其拉伸力学性能是不一样的。在超声拉伸时,材料强度指标σs和σb以及弹性模量E都明显降低,表现出软化现象;延伸率、收缩率也有所降低,断裂时的变形力也降低。得出了超声波的频率及功率对材料软化程度的影响规律:在共振频率下材料的软化现象最为明显,偏离共振点,软化效果会立即减弱;在频率一定时,振动的功率越小,软化效果越差。In this paper, the ultrasonic vibration tensile test of the Low Carbon steel was conducted. It has been confirmed that the mechanical properties of low carbon steel with ultrasonic and without ultrasonic stretch are not the same. In ultrasonic tensile, material strength index σs, σb and elastic modulus E are all decreased, which shows softening phenomenon; Elongation, shrinkage are also reduced, and the deformation force of fracture is reduced as well. In addition, a conclusion is drawn that the ultrasonic frequency and power have great influence on the material softening degree. The material softening phenomenon will be obvious under the resonance fre- quency and it will become worse when the frequency is deviated from the resonance point. For a certain frequency, the smaller of the vibration power, the worse of softening effect.

关 键 词：超声振动 拉伸试验 力学性能 

分 类 号：TG115.5[金属学及工艺—物理冶金]