Determination of surface and in-depth residual stress distributions induced by hard milling of H13 steel

In the present study, an experimental investigation was conducted to determine the effects of surface texture, cutting parameters and phase transformation on the surface and in-depth residual stress distributions induced by hard milling of AISI H13 steel (50 ± 1HRc) with the coated carbide tools. The results show that the surface residual stress distribution between two adjacent machined lays has the same periodic variational regularity as the surface profiles, which means that the surface residual stress distribution has a high correlation with the machined surface texture. Surface residual stresses in the pick direction are much more compressive than that in the feed direction; at the same time, radial depth of cut and feed are the main cutting parameters affecting surface residual stresses. Very thin white layer forms or even no obvious microstructural alteration appears in the subsurface. Phase transformations of the subsurface material deeply affect the in-depth residual stress distribution, a ‘hook’ shaped residual stress profile beneath the machined surface is generated in which the maximum compressive stresses occur at the depth of 3–18 μm below the surface.

[1]  W. Konig,et al.  Machining hard materials with geometrically defined cutting edges , 1990 .

[2]  Song Zhang,et al.  A Comparative Investigation on Surface Roughness and Residual Stress during End-Milling AISI H13 Steel with Different Geometrical Inserts , 2011 .

[3]  Ming Chen,et al.  Study on Surface Integrity in Hard Milling of Hardened Die Steel , 2006 .

[4]  Jenq-Shyong Chen,et al.  A study of the surface scallop generating mechanism in the ball-end milling process , 2005 .

[5]  L. Zhu,et al.  Fatigue strength and crack propagation life of in-service high pressure tubular reactor under residual stress , 1998 .

[6]  T. Thomas,et al.  Fractal characterisation of the anisotropy of rough surfaces , 1999 .

[7]  Shreyes N. Melkote,et al.  Effect of Tool Edge Geometry on Workpiece Subsurface Deformation and Through-Thickness Residual Stresses for Hard Turning of AISI 52100 Steel , 2000 .

[8]  J. Lebrun,et al.  Influence of machining by finishing milling on surface characteristics , 2001 .

[9]  Hans Kurt Tönshoff,et al.  Cutting of Hardened Steel , 2000 .

[10]  W. König,et al.  Turning versus grinding: a comparison of surface integrity aspects and attainable accuracies , 1993 .

[11]  D. Axinte,et al.  Surface integrity of hot work tool steel after high speed milling-experimental data and empirical models , 2002 .

[12]  P. Dahlman,et al.  The influence of rake angle, cutting feed and cutting depth on residual stresses in hard turning , 2004 .

[13]  B. Hillberry,et al.  The inclusion of compressive residual stress effects in crack growth modelling , 1999 .

[14]  Young Mok Rhyim,et al.  Thermal Fatigue Behavior of the Surface Treated Hot Die Steel Depending on Test Temperature , 2004 .

[15]  C. K. Toh,et al.  Surface topography analysis in high speed finish milling inclined hardened steel , 2004 .

[16]  H. Rahnejat,et al.  Fundamentals Of Tribology , 2008 .

[17]  H. Sidhom,et al.  Effect of near-surface residual stress and microstructure modification from machining on the fatigue endurance of a tool steel , 2002, Journal of Materials Engineering and Performance.

[18]  W. König,et al.  Residual Stresses — Measurement and Causes in Machining Processes , 1982 .

[19]  Rajiv Shivpuri,et al.  Computer modeling and prediction of thermal fatigue cracking in die-casting tooling , 2004 .

[20]  Y. Matsumoto,et al.  The Effect of Hardness on Residual Stresses in Orthogonal Machining of AISI 4340 Steel , 1990 .

[21]  Fabrizio Micari,et al.  An Experimental Investigation of Residual Stresses in Hard Machining of AISI 52100 Steel , 2011 .

[22]  Fukuo Hashimoto,et al.  The basic relationships between residual stress, white layer, and fatigue life of hard turned and ground surfaces in rolling contact , 2010 .

[23]  Anish Sachdeva,et al.  Tool life and surface integrity issues in continuous and interrupted finish hard turning with coated carbide and CBN tools , 2012 .