激光焊接铜与不锈钢接头之间焊缝区显微组织的非均匀性

来源 :中国有色金属学报（英文版） | 被引量 : 0次 | 上传用户：litiemei101

【摘要】

：

研究激光焊接(LBW)工艺对铜(Cu)和不锈钢(SS)异种焊缝显微组织与力学性能关系的影响.采用背散射(BSE)扫描电子显微镜(SEM)成像来表征LBW(Cu-SS)焊缝的高度非均匀组织特征.BSE

【作者】

：

Saranarayanan RAMACHANDRAN A.K.LAKSHMINARAYANAN

【机构】

：

Department of Mechanical Engineering,SSN College of Engineering,Kalavakkam 603103,Tamil Nadu,India

【出处】

：

中国有色金属学报（英文版）

【发表日期】

：

2020年3期

【关键词】

：

激光焊接铜不锈钢显微组织表征拉伸性能冲击韧性

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

研究激光焊接(LBW)工艺对铜(Cu)和不锈钢(SS)异种焊缝显微组织与力学性能关系的影响.采用背散射(BSE)扫描电子显微镜(SEM)成像来表征LBW(Cu-SS)焊缝的高度非均匀组织特征.BSE分析充分证明在异种焊接界面和熔合区产生复杂的显微组织.沿铜/焊缝界面存在明显的晶粒生长差异:从粗柱状晶到等轴状超细晶.高分辨电子背散射衍射(EBSD)分析证实铜/焊缝界面存在晶粒细化机制.拉伸和冲击试验结果表明,异种焊缝的拉伸和冲击性能与铜基体的基本一致.在熔合区和铜/焊接界面区等非均匀材料成分区,存在明显的显微硬度梯度.为了全面了解局部焊缝亚区的组织与性能的关系,确定出焊缝亚区的异质形核点,并与显微硬度测试结果相互关联.

其他文献

Design and Implementation of Dynamic High-Speed Switches in Super Base Station Architectures

Novel centralized base station architectures integrating computation and communication functionalities have become important for the development of future mo-bi

期刊

centralized base station architec-turesdynamic high-speed switchscheduling alg

Ca对AlMg5合金均匀化过程中热压缩行为和微观结构稳定性的影响

研究微量Ca添加对AlMg5热变形过程中微观结构稳定性和动态回复行为的影响.研究手段包括扫描电子显微术(SEM)、差示扫描量热法(DSC)、电子背散射衍射(EBSD)分析和透射电子显微

期刊

AlMg5合金热压缩均匀化显微组织粒子激发形核Zener钉扎效应

Improved Denoising Autoencoder for Maritime Image Denoising and Semantic Segmentation of USV

Unmanned surface vehicle(USV) is currently a hot research topic in maritime communication network(MCN), where denoising and semantic segmentation of maritime images taken by USV have been rarely studi

期刊

USVdenoisingautoencoderse-mantic segmentationU-Net

Blind Channel Identification for Cyclic-Prefixed MIMO-OFDM Systems with Virtual Carriers

This paper applies the repetition index scheme (RIS) to the channel identifi-cation of cyclic prefixed (CP) multiple-input multiple-output orthogonal frequency

期刊

OFDMMIMOvirtual carrierchannel identificationCholesky factorization

ENABLING TECHNOLOGIES FOR AGILE MARITIME COMMUNICATION NETWORKS

With the rapid development of maritime activities, there has been a growing demand for high data rate and ultra-reliable maritime communications. Tradi-tionally

期刊

激波管变形AA5052-H32板材的成形性

采用激波管研究弯曲预应变和压力对AA5052-H32板材成形行为的影响.测量变形拱形高度、有效应变和应力分布、硬度和晶粒尺寸演变等各种成形参数.在板材上印制圆形网格,并用Hil

期刊

冲击波冲击弯曲预应力成形性

凝固工艺参数对AlNiBi合金干滑动磨损行为的影响

对经水平定向凝固制备的Al-3％Ni-1％Bi合金(质量分数,％)铸态样品进行微磨料磨损试验,研究凝固热学参数(生长速率(VL)和冷却速率(TR))以及显微组织参数(晶胞间距(λ1)和枝晶间距(

期刊

非稳态水平凝固干滑动磨损晶胞/枝晶间距显微硬度Bi颗粒Al3Ni颗粒

Multiple Emitters Localization by UAV with Nested Linear Array: System Scheme and 2D-DOA Estimation

Unmanned Aerial Vehicle (UAV) equipped with uniform linear array has been applied to multiple emitters localization. Meanwhile, nested linear array enables to e

期刊

computational complexityDOA estimationdiscrete Fourier transformdegrees of fr

Cross-Layer QoS Enabled SDN-Like Publish/Subscribe Communication Infrastructure for IoT

Publish/subscribe paradigm is often adopted to create the communication infrastructure of the Internet of Things(IoT) for many clients to access enormous real-time sensor data. However, most current p

期刊

IoTpublish/subscribesoftware defined networkingquality of servicemid-dleware

Ti-Mo-Sn合金显微组织、力学性能和形状记忆性能

研究Mo作为β相稳定元素,对Ti-Mo-Sn合金相组成、显微组织、力学性能和形状记忆性能的影响.通过电弧熔炼法制备不同成分的Ti-xMo-3Sn(x=2,4,6,摩尔分数,％)合金,并制备二元合金

期刊

Ti-Mo-Sn合金形状记忆效应无热ω相马氏体相变力学性能

激光焊接铜与不锈钢接头之间焊缝区显微组织的非均匀性

与本文相关的学术论文