Study on Surface residual stress distribution in hardened boundary of induction hardened steel

2000 ◽  
Vol 2000.3 (0) ◽  
pp. 43-44
Author(s):  
Yoshitaka Misaka ◽  
Hisaki Koga ◽  
Hajime Nitta ◽  
Shigeo Hattori
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Hardened Steel ◽  
Residual Stress Distribution ◽  
Surface Residual Stress

Abrasive Waterjet Peening With Elastic Prestress: Subsurface Residual Stress Distribution

2007 ◽  
Author(s):  
Balaji Sadasivam ◽  
Alpay Hizal ◽  
Dwayne Arola
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Stress Field ◽  
Yield Strength ◽  
Residual Stresses ◽  
Residual Stress Distribution ◽  
Abrasive Waterjet ◽  
Residual Stress Field ◽  
Surface Residual Stress ◽  
Compressive Residual Stresses

Recent advances in abrasive waterjet (AWJ) technology have resulted in new processes for surface treatment that are capable of introducing compressive residual stresses with simultaneous changes in the surface texture. While the surface residual stress resulting from AWJ peening has been examined, the subsurface residual stress field resulting from this process has not been evaluated. In the present investigation, the subsurface residual stress distribution resulting from AWJ peening of Ti6Al4V and ASTM A228 steel were studied. Treatments were conducted with the targets subjected to an elastic prestress ranging from 0 to 75% of the substrate yield strength. The surface residual stress ranged from 680 to 1487 MPa for Ti6Al4V and 720 to 1554 MPa for ASTM A228 steel; the depth ranged from 265 to 370 μm for Ti6Al4V and 550 to 680 μm for ASTM A228 steel. Results showed that elastic prestress may be used to increase the surface residual stress in AWJ peened components by up to 100%.

Investigation on surface residual stress distribution and evaluation of engineering ceramics in rotary ultrasonic grinding machining

2016 ◽  
Vol 231 (15) ◽  
pp. 2773-2782 ◽  
Author(s):  
SL Wei ◽  
H Zhao ◽  
JT Jing ◽  
FH Yun ◽  
XL Li
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Stress Tolerance ◽  
Surface Integrity ◽  
Residual Stress Distribution ◽  
Distribution Model ◽  
Surface Residual Stress ◽  
Machined Surface ◽  
Engineering Ceramics ◽  
Ultrasonic Grinding

Residual stress of engineering ceramics is one of surface integrity evaluation indexes affecting the parts’ strength properties. Rotary ultrasonic grinding machining is the most powerful machining method for engineering ceramics with better surface integrity. The residual stress field distribution is changed due to micro cracks which are inevitable in the process. A residual stress distribution model of machined surface micro crack tip has been established in the paper. And the experimental results enable us to obtain surface residual stress distribution of engineering ceramics in rotary ultrasonic grinding machining. Then, we propose an evaluation parameter called confidence stress tolerance to evaluate surface residual stress characteristic. Preliminary results indicate that surface residual stress distribution is in line with the normal distribution. Confidence stress tolerance is an effective parameter to improve the evaluation reliability. Furthermore, precision and affecting factors of confidence stress tolerance evaluation have also been investigated.

Residual Stress Distribution in Machining Annealed 18 Percent Nickel Maraging Steel

1986 ◽  
Vol 108 (2) ◽  
pp. 93-98 ◽  
Author(s):  
Shaik Jeelani ◽  
J. A. Bailey
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Maraging Steel ◽  
Cutting Speed ◽  
Residual Stress Distribution ◽  
Surface Residual Stress ◽  
Machined Surface ◽  
Etching Technique ◽  
Near Surface ◽  
Percent Nickel

A novel electrolytic etching technique is used to determine the residual stress distribution in the machining of annealed 18 percent nickel maraging steel. Ring shaped specimens were machined under unlubricated orthogonal conditions with carbide cutting tools having wear lands of 0.125, 0.25, and 0.5 mm length at cutting speeds ranging between 0.05 and 1.60 ms−1. The results of the investigation show that the residual stresses are tensile at the machined surface and decrease with an increase in depth beneath the machined surface. The maximum (near surface) residual stress and depth of the severely stressed region increase with an increase in cutting speed and tool wear land length. The results are interpreted in terms of the variations in the amount of surface region deformation produced by changes in cutting conditions.

Studies on the Residual Stress Distribution for 2A02 Aluminum Forgings

2014 ◽  
Vol 529 ◽  
pp. 62-70
Author(s):  
Jiang Cao ◽  
Chun Fu Li ◽  
Yan Wang ◽  
Shuang Fang
Keyword(s):  
Heat Treatment ◽  
Residual Stress ◽  
Finite Element ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
Surface Residual Stress ◽  
Indentation Method ◽  
Absolute Value ◽  
The Absolute ◽  
Micro Indentation

High strength aluminum alloys which improve mechanical properties through heat treatment have been widely used in aviation manufacturing. However, residual stresses that are harmful to the materials are brought in during the heat treatment process. By means of the analysis of micro-indentation method and ANSYS finite element method, the residual stress distribution in 2A02aluminum forgings after water quenching were systematically investigated, mainly considering two factors of the symmetry of structure and the variation of surface constraint. The results of micro-indentation method show that the absolute value of the residual stress within the sample tends to decrease as the condition of constraint increase at the location of the same thickness; the absolute value of the surface residual stress also tends to decrease as the thickness of the sample increase with the same constraint conditions, the absolute value of the residual stress in the symmetrical sample is lower than that in the asymmetrical sample. The results of finite element simulation are as follows: for 2A02 aluminum alloy, the stress field distribution during the process of quenching is mainly influenced by the thickness of the samples. After the quenching process, the stress state at the components surface are controlled by compressive stress in the direction of both thickness and width, while the residual stress within the samples is dominated by tensile stress.

scholarly journals Effects of Hard Shot Peening with Water Jet on Surface Residual Stress Distribution of Carburized Steels

1994 ◽  
Vol 80 (2) ◽  
pp. 131-136 ◽  
Author(s):  
Takayoshi ISHIGURO ◽  
Toshiharu SHIMAZAKI ◽  
Kiyoshi TERAYAMA ◽  
Akio YONEGUCHI
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Shot Peening ◽  
Water Jet ◽  
Residual Stress Distribution ◽  
Surface Residual Stress

The Impact on the Residual Stress Distribution in Continuous Hard Turning GCr15

2014 ◽  
Vol 800-801 ◽  
pp. 596-600
Author(s):  
Kai Li ◽  
Tao Chen ◽  
Su Yan Li ◽  
Xiao Ting Wang ◽  
Tao Liu
Keyword(s):  
Residual Stress ◽  
Stress Distribution ◽  
Hard Turning ◽  
Cutting Speed ◽  
Residual Stress Distribution ◽  
Residual Tensile Stress ◽  
Surface Residual Stress ◽  
Simulation Results ◽  
Experimental Values ◽  
The Impact

In this paper, we use the finite element simulation method to create a three-dimensional thermal mechanical coupled model that simulate the distribution of residual stress under condition of hard turning GCr15. And twice consecutive cutting simulation are required, then analysised the influence rule of two consecutive machining on surface residual stress distribution. The simulation results were compared with the experimental values, the results show that the simulated values of continuous cutting was very closed to the experimental values and the simulation results showed a certain reliability, the maximum residual tensile stress value increased significantly as the cutting speed increased.

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