Experimental investigation and analysis of the influence of tool edge geometry and work piece hardness on surface residual stresses, surface roughness and work-hardening in hard turning of AISI D2 steel

被引:36
|
作者
Sarnobat, S. S. [1 ]
Raval, H. K. [1 ]
机构
[1] Sardar Vallabhbhai Natl Inst Technol, Mech Engn Dept, Surat 395007, India
基金
欧盟地平线“2020”;
关键词
Surface integrity; Residual stresses; Surface roughness; Monte Carlo simulation; AISI D2 steel; Nano indentation; CUTTING-EDGE; INCONEL; 718; WORKPIECE HARDNESS; CERAMIC TOOLS; INTEGRITY; WEAR; PARAMETERS; MACHINABILITY; SIMULATION; FEED;
D O I
10.1016/j.measurement.2018.08.048
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Surface integrity of the machined component significantly affects its in-service performance in terms of fatigue life and resistance to corrosion. Residual stresses, work hardening, microstructure alterations and surface roughness are the major issues that constitute the surface integrity of a machined surface which are a resultant of the plastic deformation. The current study attempts to investigate the effect of the different tool edge geometries and the process parameters in CBN hard turning of AISI D2 steel on the triaxial surface residual stresses, surface roughness and work hardening in the machining affected region. XRD in conjunction with nano indentation has been utilized for measurement of the surface integrity parameters. The behavior of the residual stresses is correlated to the input parameters. Sensitivity of the triaxial stresses to the input parameters is obtained by Monte Carlo Simulation and optimum ranges of the input parameters and the probabilities of inducing compressive stresses have been determined. The sensitivity analysis indicates that the axial residual stress has maximum sensitivity to depth of cut while the radial and circumferential residual stresses and surface roughness are most sensitive to feed rate. The certainty analysis indicates that machining with light honed tool edge geometry in the low to moderate range of process parameters induces a compressive state of residual stresses and better surface quality. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码:235 / 260
页数:26
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