摘要
测定了２Ｃｒ１３钢及其激光熔覆试样在３．５％ＮａＣｌ（ＰＨ＝７）水溶液中频率为５０Ｈｚ时的腐蚀疲劳寿命曲线，研究了其腐蚀疲劳断裂行为特征。结果表明，激光熔覆试样的腐蚀疲劳裂纹起源于２Ｃｒ１３钢基材表面蚀坑。由于激光合金层抑制了腐蚀疲劳裂纹的萌生，使其腐蚀疲劳寿命明显高于２Ｃｒ１３钢。该结果为激光熔覆技术的应用开辟了新的道路。
This paper reports studies of the corrosions,fatigues,and fracture characteristicsof cobalt-base cladded coating on 2Cr13 steel substrates,performed at 50 Hz in 3.5% NaClsolution(PH=7).The corrosion fatigue lifetime curve was determined. The results showthat almost all corrosion fatigue cracks of laser cladded specimens derive from pits on thesurface of 2Cr13 steel substrates. Cobalt-base laser cladding coatings on the specimens gavea greatly increased corrosion fatigue lifetime comPared with 2Cr13 steel specimens becausethe initiation of corrosion fatigue cracks is restrained by the laser cladded coating.From theresults,it may open up a new way to the application of laser cladding technology.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1996年第1期91-96,共6页
Chinese Journal of Lasers
关键词
2CR13钢
激光熔覆
腐蚀疲劳
钢
Cr13 steel,laser cladding treatment,corrosion fatigue
