激光熔覆再制造对试件拉伸性能影响的实验研究  

Experimental Study on the Influence of Laser Cladding Remanufacturing on the Tensile Properities of Samples

作　　者：成细洋[1] 邱长军[1] 皮政清[1] 滕崇其[1] 余金水[1] 李勇[1] 

机构地区：[1]南华大学机械工程学院,湖南衡阳421001

出　　处：《现代机械》2011年第6期10-11,14,共3页Modern Machinery

基　　金：南华大学研究生科研创新项目2010XCX07

摘　　要：本文通过在标准拉伸试样上采用激光再制造的方式制得厚度分别为0.5 mm和0.8 mm的Ni25AA熔覆层,再进行拉伸实验研究激光熔覆再制造过程对试样的拉伸性能的影响。实验结果表明,对于10 mm的标准拉伸试样,熔覆层厚度为0.5 mm时,激光熔覆再制造技术对拉伸试样拉伸强度的影响不大。当熔覆层厚度为0.8 mm时,再制造得到的拉伸件的拉伸强度接近原普通试样的拉伸强度。而当熔覆层厚度在0.5 mm至0.8 mm间范围内,试样断裂时的总位移量及弹性模量随着熔覆厚度增加而逐渐减少。Ni25AA cladding layers with the thickness of 0.5 nun and 0.8 mm were produced on the standard tensile samples in the way of laser remanufactaring. Tensile experiments were carried out on tensile samples processed to study of the influence of laser cladding remanufacturing proaess on the tensile properties of samples. The results show that for 4-10 standard of tensile samples, when thickness of cladding layer is 0.5 mm, the enhancing effect of laser cladding on tensile strength of samples is not obvious ; when cladding thickness is 0.8 mm, stretch of remanufacturing tensile sample is close to the tensile strength of the original common sample,when the cladding thickness is between 0.5mm and 0.8mm,the thicker the cladding is,the smaller the total displacement before sample splits and elastic modulus are.

关 键 词：激光熔覆 再制造 性能 拉伸 

分 类 号：V261.8[航空宇航科学与技术—航空宇航制造工程] TU278.1[建筑科学—建筑设计及理论]