超高强度钢管材的喷丸强化研究北京航空材料研究所李向斌，王仁智，汝继来，殷源发研究了超高强度钢圆管件中的疲劳性能与喷丸强化工艺之间的关系。在管壁无氧化的情况下，外壁强化时疲劳裂纹荫生于内壁表面；而当内壁强比时疲劳裂纹则萌生于外壁表面。对内外表面进行强化... Shot peening of ultra-high strength steel pipe Beijing Institute of Aeronautical Materials Li Xiangbin, Wang Renzhi, Ru Jilai, Yin Yuanfa The relationship between fatigue performance and shot peening in ultra-high strength steel pipe fittings was studied. In the case of no wall oxidation, the fatigue crack is generated on the inner wall when the outer wall is strengthened, while the fatigue crack is initiated on the outer wall when the inner wall is stronger than the outer wall. Strengthen the inner and outer surfaces ...