TY  - JOUR
AU  - Yue, Xiujie
AU  - Gao, Yeran
AU  - Wang, Youqiang
AU  - Zhang, Ping
PY  - 2026
DA  - 2026/10/12
TI  - Study on the Effect of Cryogenic Pretreatment-Based Abrasive Water Jet Surface Modification on the Surface Integrity of 7075 Aluminum Alloy
JO  - Journal of Materials Durability and Engineering
T2  - Journal of Materials Durability and Engineering
JF  - Journal of Materials Durability and Engineering
VL  - 2
IS  - 1
SP  - 1
EP  - 13
DO  - 10.62762/JMDE.2025.826186
UR  - https://www.icck.org/article/abs/JMDE.2025.826186
KW  - 7075 aluminum alloy
KW  - deep cryogenic treatment
KW  - abrasive water jet
KW  - surface roughness
KW  - surface quality
KW  - residual stress
KW  - microhardness
AB  - This study investigates the influence of a deep cryogenic treatment-abrasive water jet (DCT-AWJ) composite surface modification process on the surface integrity of 7075 aluminum alloy, with single abrasive water jet (AWJ) treatment as the control. Surface morphology, phase composition, residual stress, and microhardness were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and microhardness testing. Under AWJ treatment, the surface roughness increases with jet pressure (0.864, 1.082, and 1.325~$\mu$m at 5, 10, and 15~MPa). Under DCT-AWJ treatment, the roughness decreases with increasing cryogenic treatment time but increases with jet pressure, and it is lower than that obtained by AWJ alone at the same pressure. All samples exhibit $\alpha$-Al and $\eta$-MgZn$_2$ diffraction peaks, with $\alpha$-Al peaks at $2\theta = 38.5^{\circ}$, $44.7^{\circ}$, $65.1^{\circ}$, and $78.2^{\circ}$, indicating no significant phase transformation; the $\alpha$-Al peaks broaden with increasing jet pressure and cryogenic duration. Both treatments introduce compressive residual stress, whose surface and maximum values increase with jet pressure and, for DCT-AWJ, with cryogenic duration, reaching $-563$~MPa and $-1165$~MPa, respectively. The surface microhardness after AWJ treatment increases with jet pressure (184.71, 185.78, and 189.41~HV), whereas DCT-AWJ treatment raises it to 202.87~HV and deepens the hardened layer to 264.63~$\mu$m. These results indicate that cryogenic pretreatment enhances the surface integrity of 7075 aluminum alloy relative to AWJ treatment alone.
SN  - pending
PB  - Institute of Central Computation and Knowledge
LA  - English
ER  - 

@article{Yue2026Study,
  author = {Xiujie Yue and Yeran Gao and Youqiang Wang and Ping Zhang},
  title = {Study on the Effect of Cryogenic Pretreatment-Based Abrasive Water Jet Surface Modification on the Surface Integrity of 7075 Aluminum Alloy},
  journal = {Journal of Materials Durability and Engineering},
  year = {2026},
  volume = {2},
  number = {1},
  pages = {1-13},
  doi = {10.62762/JMDE.2025.826186},
  url = {https://www.icck.org/article/abs/JMDE.2025.826186},
  abstract = {This study investigates the influence of a deep cryogenic treatment-abrasive water jet (DCT-AWJ) composite surface modification process on the surface integrity of 7075 aluminum alloy, with single abrasive water jet (AWJ) treatment as the control. Surface morphology, phase composition, residual stress, and microhardness were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and microhardness testing. Under AWJ treatment, the surface roughness increases with jet pressure (0.864, 1.082, and 1.325~\$\mu\$m at 5, 10, and 15~MPa). Under DCT-AWJ treatment, the roughness decreases with increasing cryogenic treatment time but increases with jet pressure, and it is lower than that obtained by AWJ alone at the same pressure. All samples exhibit \$\alpha\$-Al and \$\eta\$-MgZn\$\_2\$ diffraction peaks, with \$\alpha\$-Al peaks at \$2\theta = 38.5^{\circ}\$, \$44.7^{\circ}\$, \$65.1^{\circ}\$, and \$78.2^{\circ}\$, indicating no significant phase transformation; the \$\alpha\$-Al peaks broaden with increasing jet pressure and cryogenic duration. Both treatments introduce compressive residual stress, whose surface and maximum values increase with jet pressure and, for DCT-AWJ, with cryogenic duration, reaching \$-563\$~MPa and \$-1165\$~MPa, respectively. The surface microhardness after AWJ treatment increases with jet pressure (184.71, 185.78, and 189.41~HV), whereas DCT-AWJ treatment raises it to 202.87~HV and deepens the hardened layer to 264.63~\$\mu\$m. These results indicate that cryogenic pretreatment enhances the surface integrity of 7075 aluminum alloy relative to AWJ treatment alone.},
  keywords = {7075 aluminum alloy, deep cryogenic treatment, abrasive water jet, surface roughness, surface quality, residual stress, microhardness},
  issn = {pending},
  publisher = {Institute of Central Computation and Knowledge}
}