Investigation of Deep Cold Rolling Effects on the Bending Fatigue of Brass C38500

Abstract

In this paper, the effects of deep cold rolling (DCR) process on the bending fatigue behavior of brass C38500 are investigated. Unilateral rotary bending fatigue tests were conducted by an automatic device on the basis of Moore rotary bending instrument. The treatment was done for various rolling depths (rolling forces) and one repeated pass to find the most effective conditions. It was found that rolling depth of 75 µm had the best results and could improve the fatigue life about 20% and 302% for high and low cycle fatigue regimes, respectively. At the end, the results were discussed more using both microscopic examinations and finite element (FE) simulations in ABAQUS.

Improvement in fatigue strength of 41Cr4 steel through slide diamond burnishing

“…The FE approach is used considerably less-only 10% of the published studies use an FE method (FEM). It should be noted that the FEM has been used more extensively to explore the processes involved in rolling contact, i.e., roller burnishing [4][5][6][7][8][9][10][11][12][13][14][15] and deep rolling [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] (including the special case of deep rolling-low plasticity burnishing [31][32][33][34][35][36][37]), than for SB study [38][39][40][41][42][43][44][45][46]. When it comes to SB, the case in which the deforming element is a diamond is most often simulated [38,[40][41][42]…”

Surface Properties and Corrosion Behavior of Turn-Assisted Deep-Cold-Rolled AISI 4140 Steel

“…One of the MSE methods, deep cold rolling (DCR), is getting attention nowadays as it is a fast, chipless, and economical surface enhancement method applicable to prevailing conventional or computer numerical control (CNC) machine tools. Further producing a deep layer of compression and nanocrystalline microstructure on the surface of samples, it also can lessen the surface roughness of materials and enhance the fatigue life of engineering components without affecting their bulk properties (Ref [22][23][24][25][26][27][28][29][30][31][32][33][34]. There are numerous parameters to be considered, and the effects of each of these parameters are dependent on other variables.…”

“…Therefore, improving the surface properties of machine components that work under fatigue and corrosion is an effective way to enhance the service life of the components. Although surface alteration by application of the deep-cold-rolling process is quite new, it has received substantial demand due to enhanced residual compressive stress (Ref 29,45) , surface work hardening (Ref 28,46) , surface finish (Ref 18,47) and grain refinement which in turn will have the positive effect on corrosion properties. Therefore, a surface enhancement method improving the surface properties after the machining would be beneficial along with the effective use of the design of experiment to reduce the time and number of experiments to be conducted.…”