摘要
随着我国航空航天行业的迅速发展,以镍基合金为代表的高温合金加工制造增多。高温合金具有优异的高温强度,良好的抗氧化和抗热腐蚀性能,良好的疲劳性能、断裂韧性等综合性能,在切削加工中存在切削温度高、导热性差、加工硬化等特性,因此,要实现高效、高质量的加工,必须重视刀具寿命。刀具寿命与刀具涂层有密切关系,本文通过研究刀具涂层性能来改善刀具寿命。采用电弧离子镀法进行涂层,通过研究不同偏压和沉积温度,在钨钢(硬质合金)基体上完成AlTiN涂层的制备;用扫描电子显微镜(SEM)及能谱仪(EDS)观察涂层的表面和截面形貌,并分析涂层的成分,用X衍射仪(XRD)分析涂层的物相结构,用纳米硬度计测量涂层的纳米硬度H、杨氏模量E和抗塑性变形因子H^(3)/E^(2),利用微米划痕仪分析涂层与基体的结合力;对所制备的不同涂层刀具进行GH4169高温合金切削加工试验,通过涂层刀具后刀面磨损值VB判断涂层切削性能。
With the rapid advances in aerospace industry,the processing of high-temperature alloys represented by nickel-base alloys has increased.Although high-temperature alloys have excellent high temperature strength,good oxidation resistance,thermal corrosion resistance,good anti-fatigue,fracture toughness and other comprehensive properties,there exist high cutting temperature,poor thermal conductivity and work hardening in the cutting process.In order to achieve the high efficiency and high quality processing,there are many technical problems to be solved.In this paper,the AlTiN coating is applied to the cemented carbide substrate by arc ion plating with different bias voltage and deposition temperature,then,the coating surface and cross section morphology are observed by scanning electron microscope(SEM)and energy spectrometer(EDS)and the coating composition is analyzed,the phase structure of the coating is also analyzed by XRD,the Nano hardness H,Young′s modulus E and anti-plastic deformation factor H^(3)/E^(2) of the coating are measured by nano-hardness meter.The cutting test on GH4169 high-temperature alloy is carried out with cutting tools of different coatings,and the cutting performance of the coating is judged by the wear value VB on the tool′s flank face.
作者
于忠光
吕显豹
张继波
Yu Zhongguang;Lv Xianbao;Zhang Jibo(Guo Hong Tools System(Wuxi)Co.,Ltd.,Wuxi,Jiangsu 214000,China)
出处
《工具技术》
北大核心
2021年第4期28-31,共4页
Tool Engineering
作者简介
第一作者:于忠光,工程师,国宏工具系统(无锡)股份有限公司,214000江苏省无锡市。
