评述了超高强度钢、高强度A1合金和Ti合金表面完整性抗疲劳应用技术的研究和发展。高强度合金疲劳性能对应力集中敏感，不适当的加工工艺和切削热等造成的表面损伤和髙拉应力使其疲劳和应力腐蚀性能损失殆尽。先进的表面完整性加工尤其是表面改性可显著提高疲劳性能，如激光冲击使7475-T761拉-拉疲劳寿命提高约89%，7075-T6裂纹扩展速率降低到原来的1/1500;超声喷丸使超高强度钢低周疲劳强度提高约50%，Ti7A14Mo合金髙周疲劳强度提高约15%;表面超硬化可使Vasco X-2M齿轮钢接触疲劳寿命提高30～35倍等。

Investigation and development status of the surface integrity application technology to improve fatigue behavior of high strength aluminium alloy, titanium alloy and ultra-high strength steels is reviewed. Fatigue behavior of the high strength alloys mentioned above is sensitive to surface stress concentration, as that in the case of a reduction in the surface integrity, their fatigue stress and stress corrosion property are reduced heavily by surface residual tensile stress and damage caused by abusive final mechanical processes such as grind, particularly the machining heat which occurs during machining practice. Some advanced mechanical treatments in surface integrity make an outstanding improvement on fatigue behavior of the high strength alloys. For example an increase of about 89% , in the tensile-tensile fatigue life for laser-shocked 7475-T761 specimens and an improvement in da/dN of about 1500 times for laser-shocked 7070-T76 specimens were obtained. Ultrasonic shot peening resulted in low-cycle fatigue strength increase of about 50% for HP-310 grade ultra-high strength steel and about 15% for Ti7A14Mo in high-cycle. An advanced surface duplex hardening treatment caused also a 30 to 35-fold increase in contact fatigue life for vasco X-2 grade gear steel.