Residual Stress and Fatigue Properties of AISI H13 Steel by Sustainable Dry Milling

2012 ◽  
Author(s):  
W. Li ◽  
Y. B. Guo
Keyword(s):  
Residual Stress ◽  
Flank Wear ◽  
End Milling ◽  
Sustainable Manufacturing ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
H13 Steel ◽  
Tool Flank Wear ◽  
Aisi H13 ◽  
Aisi H13 Tool Steel

Dry machining is a cluster of sustainable manufacturing processes to eliminate the negative environmental effect of machining coolants. It is critical to ensure that product quality cannot be sacrificed for achieving sustainability. The progress of tool flank wear during hard milling adversely affects surface integrity and, therefore, fatigue life of machined components. This paper focuses on the influence of tool flank wear on residual stress and fatigue properties in dry end milling AISI H13 tool steel (50 ± 1 HRC) using PVD coated tools. The effects of flank wear (VB = 0, 0.1, and 0.2 mm) on residual stresses at three different feeds were studied. Four-point bending fatigue tests were performed on the samples machined at five levels of tool flank wears (VB = 0, 0.05, 0.10, 0.15, 0.20 mm) and surface fatigue initiations of the fatigued samples were identified by the fractographic method.

Effect of Pre-Strain and Roller Working on Torsional Fatigue Properties of a Structural Steel

2011 ◽  
Vol 295-297 ◽  
pp. 2227-2230
Author(s):  
Cong Ling Zhou
Keyword(s):  
Residual Stress ◽  
Fatigue Limit ◽  
Work Hardening ◽  
Compressive Residual Stress ◽  
Strain Ratio ◽  
Fatigue Tests ◽  
The Other ◽  
Fatigue Properties ◽  
Torsional Fatigue ◽  
Stress Work

In this study, fatigue tests have been performed using two kinds of specimens made of 25 steel. One is pre-strained specimen with pre-strain ratio changing from 2% to 8% by tension, the other is roller worked with deformation of 0.5 mm and 1.0 mm in diameter direction. In the case of pre-strained specimen, the fatigue limit increases according to increase of tensile pre-strain, the fatigue limit of 8% pre-strained specimen is 25% higher than that of non-pre-strained one; in the case of roller worked specimen, the fatigue limit of R05 and R10 is 126% and 143% to that of non-roller worked specimen, respectively. These remarkable improvements of fatigue limit would be caused by the existence of compressive residual stress, work-hardening and the elongated microscopic structures.

scholarly journals Prediction of residual stress in precision milling of AISI H13 steel

Procedia CIRP ◽  
2018 ◽  
Vol 71 ◽  
pp. 329-334 ◽  
Author(s):  
Andreas Reimer ◽  
Xichun Luo
Keyword(s):  
Residual Stress ◽  
H13 Steel ◽  
Aisi H13 Steel ◽  
Aisi H13

Correlation study of tool flank wear with machined surface texture in end milling

Measurement ◽  
2013 ◽  
Vol 46 (10) ◽  
pp. 4249-4260 ◽  
Author(s):  
S. Dutta ◽  
A. Kanwat ◽  
S.K. Pal ◽  
R. Sen
Keyword(s):  
Surface Texture ◽  
Flank Wear ◽  
End Milling ◽  
Correlation Study ◽  
Machined Surface ◽  
Tool Flank Wear

Surface Integrity and Fatigue Strength of Hard Milled Surfaces

2011 ◽  
Author(s):  
W. Li ◽  
Y. B. Guo ◽  
M. E. Barkey ◽  
C. Guo ◽  
Z. Q. Liu
Keyword(s):  
Fatigue Life ◽  
Fatigue Strength ◽  
Surface Integrity ◽  
Endurance Limit ◽  
Flank Wear ◽  
Machining Accuracy ◽  
Tool Flank Wear ◽  
Radial Depth ◽  
Aisi H13 Tool Steel ◽  
Machined Surfaces

Tool flank wear during hard milling adversely affects surface integrity and, therefore, fatigue strength of machined components. Surface integrity and machining accuracy deteriorate when tool wear progresses. In this paper, surface integrity and its impact on endurance limit of AISI H13 tool steel (50 ± 1 HRC) by milling using PVD coated tools are studied. The evolutions of surface integrity including surface roughness, microhardness and microstructure were characterized at three levels of tool flank wear (VB = 0, 0.1mm, 0.2mm). At each level of tool flank wear, the effects of cutting speed, feed, and radial depth-of-cut on surface integrity were investigated respectively. Fatigue endurance limits of the machined surfaces at different reliability levels were calculated and correlated with the experimentally determined fatigue life. The good surface finish and significant strain-hardening on the machined surfaces enhance endurance limit, which enables machined components have a fatigue life over 106 cycles.

Influence of Heat Treatment on Fatigue Strength of Drawn Steel Tubes for Small-Sized Single Pass Boiler

2011 ◽  
Vol 275 ◽  
pp. 109-112 ◽  
Author(s):  
Daisuke Yonekura ◽  
Yuta Fujie ◽  
Hayato Nishii ◽  
Hiroshi Yamakawa ◽  
Riichi Murakami
Keyword(s):  
Heat Treatment ◽  
Residual Stress ◽  
Grain Size ◽  
Fatigue Strength ◽  
Steel Tube ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Post Heat Treatment ◽  
Single Pass ◽  
Heat Treated

Tension-tension fatigue tests were performed to examine the influence of post drawing heat treatment on the fatigue properties of drawn specific steel tube (STB340) for small-sized single pass boiler. The untreated, as-drawn and post drawing heat treated series were prepared for fatigue tests. The hardness, grain size and residual stress were measured for each series. As a result, the change of grain size and residual stress was small after post heat treatment. The drawn series was softened by post heat treatment but the hardness was still higher than untreated samples. The fatigue strength of the as-drawn and the post drawing heat treated series was higher than that of untreated series. In addition, the difference of endurance limit was small between as-drawn and post drawing heat treated series.

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