利用TDS氢热分析及超声波疲劳等试验方法研究了3种不同氢含量的超高强度弹簧钢60Si2CrVA的超高周疲劳性能.TDS分析结果表明,电解充氢样(CH样)的氢逸出曲线在低温侧有一个强的氢逸出峰,在高温侧有一个弱的氢逸出峰;淬回火样(QT样)和真空处理样(VT样)则仅在高温侧附近有一弱的氢逸出峰.3种氢含量试样的疲劳断口均以包含GBF(粒状亮区)的内部夹杂起裂方式为主.随着氢含量的增加,GBF区的面积增加而试样在109周次下的疲劳强度显著下降.
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