航空材料学报
航空材料學報
항공재료학보
JOURNAL OF AERONAUTICAL MATERIALS
2010年
1期
67-71
,共5页
郝雪龙%刘建华%李松梅%于美%王宗武
郝雪龍%劉建華%李鬆梅%于美%王宗武
학설룡%류건화%리송매%우미%왕종무
中性盐雾%预腐蚀%疲劳寿命%C(t)曲线
中性鹽霧%預腐蝕%疲勞壽命%C(t)麯線
중성염무%예부식%피로수명%C(t)곡선
neutral salt spray test%pre-corrosion%fatigue life%C(t) curve
采用失重法和XRD法研究了AF1410钢在中性盐雾环境中的耐蚀性能,并对中性盐雾预腐蚀不同时间后的试样进行疲劳性能测试,研究了不同预腐蚀时间对材料疲劳寿命的影响.结果表明:AF1410钢发生了严重的全面腐蚀,腐蚀产物主要由FeO(OH)和Fe_3O_4组成,并得到其腐蚀失重曲线;疲劳断口形貌分析表明,随预腐蚀时间的延长,腐蚀损伤程度增加,在疲劳加载过程中易形成较多的疲劳裂纹扩展源而导致疲劳断裂失效;最终获得中性盐雾预腐蚀AF1410钢结构疲劳寿命特性以及预腐蚀对疲劳寿命的影响系数C(t)曲线.
採用失重法和XRD法研究瞭AF1410鋼在中性鹽霧環境中的耐蝕性能,併對中性鹽霧預腐蝕不同時間後的試樣進行疲勞性能測試,研究瞭不同預腐蝕時間對材料疲勞壽命的影響.結果錶明:AF1410鋼髮生瞭嚴重的全麵腐蝕,腐蝕產物主要由FeO(OH)和Fe_3O_4組成,併得到其腐蝕失重麯線;疲勞斷口形貌分析錶明,隨預腐蝕時間的延長,腐蝕損傷程度增加,在疲勞加載過程中易形成較多的疲勞裂紋擴展源而導緻疲勞斷裂失效;最終穫得中性鹽霧預腐蝕AF1410鋼結構疲勞壽命特性以及預腐蝕對疲勞壽命的影響繫數C(t)麯線.
채용실중법화XRD법연구료AF1410강재중성염무배경중적내식성능,병대중성염무예부식불동시간후적시양진행피로성능측시,연구료불동예부식시간대재료피로수명적영향.결과표명:AF1410강발생료엄중적전면부식,부식산물주요유FeO(OH)화Fe_3O_4조성,병득도기부식실중곡선;피로단구형모분석표명,수예부식시간적연장,부식손상정도증가,재피로가재과정중역형성교다적피로렬문확전원이도치피로단렬실효;최종획득중성염무예부식AF1410강결구피로수명특성이급예부식대피로수명적영향계수C(t)곡선.
The corrosion resistance of AF1410 steel in the neutral salt spray environment was studied using the methods of weight loss and XRD. After different precorrosion time in the neutral salt spray, the fatigue properties of the specimens were tested, and the influences of the different precorrosion time on the fatigue life of the material were investigated. The results showed that serious all-around corrosion happened on the AF1410 steel, and the corrosion products are mainly FeO(OH) and Fe_3O. The corrosion weight loss curve was plotted, and the fatigue fracture morphology was observed. It was shown that with the increasing of the corrosion time, the degree of the corrosion damage increased and more fatigue crack initiations were apt to take shape, which led to the final fatigue rupture. Finally, the fatigue life properties of AF1410 steel after neutral salt spray corrosion were obtained and the influence coefficient C(t) of the pre-corrosion on the fatigue life was plotted.