Effects of Shot Peening Pressure, Time, and Material on the Properties of Carburized Steel Shafts
Abstract
:1. Introduction
2. Materials and Methods
2.1. Carburization of Steel Shafts
2.2. Shot Peening of Carburized Shafts
2.3. Characterizations of Shot-Peened Carburized Shafts
2.3.1. X-ray Diffraction
2.3.2. Microhardness
2.3.3. Surface Roughness
3. Results and Discussion
3.1. The Effect of Shot Peening and Peening Pressures on the Carburized Shaft
3.2. The Effect of Peening Time
3.3. The Effect of Peening Pellets with Different Materials
3.4. The Surface Roughness of Peening with Different Parameters on the Carburized Shaft
4. Conclusions
- The residual tensile stress on the surface of the carburized shaft was converted into a compressive stress, accompanied by a significant decrease in the amount of retained austenite in the subsurface region.
- The shot peening effect increased with increasing the peening pressure and time. Using the SS pellets with a peening pressure of 5 kg/cm2 and a peening time of 64 s resulted in the optimal peening effect. The maximum residual stress reached −779 MPa (at a depth of 0.02 mm), and the microhardness (at the surface) was also the largest (827 HV0.1).
- Peening with different materials can affect the peening results, and glass pellets were more effective than CS and SS pellets. However, the glass pellets suffered the largest consumption rate, while CS pellets resulted in the largest surface roughness. Thus, peening with SS pellets was determined to be the optimal choice for practical industrial application.
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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C | Si | Mn | P | S | Cr | Ni | Mo | Cu | Fe. |
---|---|---|---|---|---|---|---|---|---|
0.13–0.18 | 0.15–0.35 | 0.60–0.85 | ≤0.03 | ≤0.03 | 0.90–1.20 | ≤0.25 | 0.15–0.30 | ≤0.30 | Bal. |
Pellet Parameters | Peening Parameters | |||
---|---|---|---|---|
Material | Hardness | Weight (mg) | Air Pressure (kg/cm2) | Time (s) |
Stainless Steel | 50 HRC | 0.90 | 3 | 32 |
Stainless Steel | 50 HRC | 4 | 32 | |
Stainless Steel * | 50 HRC | 5 | 32 | |
Stainless Steel * | 50 HRC | 0.90 | 5 | 32 |
Stainless Steel | 50 HRC | 5 | 48 | |
Stainless Steel | 50 HRC | 5 | 64 | |
Stainless Steel * | 50 HRC | 0.90 | 5 | 32 |
Carbon Steel | 40 HRC | 0.89 | 5 | 32 |
Glass | 470 HV | 0.17 | 5 | 32 |
Diffractometer Parameters | Specification/Values |
---|---|
Tube type | Cr |
Diffraction plane (hkl) | αFe (211) |
Bragg angle for diffraction (2θ) | 156.5° |
Current | 1.5 mA |
Voltage | 30 kV |
Exposure time | 15 s |
Collimator diameter | 2 mm |
Collimator distance | 51 mm |
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Lu, S.-Q.; Chiu, L.-H.; Chang, P.-J.; Lin, C.-K. Effects of Shot Peening Pressure, Time, and Material on the Properties of Carburized Steel Shafts. Materials 2024, 17, 4124. https://doi.org/10.3390/ma17164124
Lu S-Q, Chiu L-H, Chang P-J, Lin C-K. Effects of Shot Peening Pressure, Time, and Material on the Properties of Carburized Steel Shafts. Materials. 2024; 17(16):4124. https://doi.org/10.3390/ma17164124
Chicago/Turabian StyleLu, Shao-Quan, Liu-Ho Chiu, Pei-Jung Chang, and Chung-Kwei Lin. 2024. "Effects of Shot Peening Pressure, Time, and Material on the Properties of Carburized Steel Shafts" Materials 17, no. 16: 4124. https://doi.org/10.3390/ma17164124