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; Abstract: The fatigue pre-cracking 304 stainless steel (SS) specimens with lengths of 1.002 mm (L-crack) and 0.575 mm (S-crack) were prepared. Their corrosion behavior was studied by electrochemical noise (EN) in 4 mol/L NaCl + 0.01 mol/L Na2S2O3 solution under slow-strain-rate-testing (SSRT) conditions. Moreover, the characteristics of L-crack’s surface morphology and potential......
thickness under spherical indentation are investigated within the framework of linear fracture mechanics. The J-integral associated to such cracks was computed. The evolution of J-integral vs the crack length......
Analysis and Modeling of Friction Stir Processing-Based Crack Repairing in 2024 Aluminum AlloyJun-Gang Ren1,Lei Wang2,Dao-Kui Xu3,Li-Yang Xie1,Zhan-Chang Zhang21. Department of Mechanical Engineering... results showed that the entire crack repairing was a solid-phase process and plastic materials tended to flow toward the shoulder center and then resulted in the repairing of cracks.Meanwhile,the coarse......
进行分析,如图4和5.表1汇总了两种组织的疲劳裂纹源位置及寿命随应力幅大小的变化情况. 图4 片层组织高周疲劳断口主裂纹萌生区的SEM像 Fig. 4 SEM images of primary crack initiation region on HCF fracture surface of LM 图5 双态组织高周疲劳断口主裂纹萌生区的SEM像 Fig. 5 SEM images of primary crack initiation region on HCF fracture surface of BM 表1 不同应力幅下两种组织的疲劳裂纹萌生源位置和疲劳寿命 Table 1 Initiation site of fatigue primary crack and fatigue life for LM......
Mechanism of hot-rolling crack formation in lean duplex stainless steel 2101Zhi-hui Feng,Jing-yuan Li,Yi-de WangSchool of Materials Science and Engineering, University of Science and Technology..., serious deformation accumulated in the interior of austenite, leading to a substantial increase in hardness. The main cause of crack formation is the microhardness difference between ferrite......
合材料的热疲劳裂纹扩展抗力 关键词: 热疲劳;裂纹扩展;复合材料;基体合金; 中图分类号: TB33 收稿日期:1999-06-14 Short thermal fatigue crack growth of Al2O3sf/ZL109 composites Abstract: Thermal fatigue crack propagation behavior of alumina short fibre (V f=18%) reinforced aluminum silicon alloy composite and aluminum silicon matrix alloy have been investigated under thermal cycling......
Effects of microstructure on fatigue crack propagation behavior in a bi-modal TC11 titanium alloy fabricated via laser additive manufacturingYafei Wang1,2,Rui Chen1,2,Xu Cheng1,2,Yanyan Zhu1,2,Jikui... University3. School of Aeronautic Science and Engineering, Beihang University摘 要:In this study, the crack propagation behaviors in the equiaxed and equiaxed-columnar......
Effects of Ag Addition on Precipitation and Fatigue Crack Propagation Behavior of a Medium-Strength Al–Zn–Mg AlloyLianghua Lin,Zhiyi Liu,Wenjuan Liu,Yaru Zhou,Tiantian Huang摘 要:Effects of trace addition of Ag on the fatigue crack propagation behavior and microstructure of a mediumstrength aged Al–Zn–Mg alloy were investigated in the present work......
; 文献标志码:A Molecular dynamics simulation of crack propagation behavior of aluminum LIU Xiao-bo, XU Qing-jun, LIU Jian (School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China) Abstract: The crack propagation behavior of aluminum was studied by molecular dynamics method. The molecular......
板坯角横裂纹在轧后钢板边部的延展行为刘洋1,顾林豪1,李战军1,王文军1,吕延春1,王海宝1,姜中行1(1.北京市首钢技术研究院)摘 要:对板坯角横裂纹在轧后钢板边部的延展行为进行了实验室和工业试验研究.得出:随着钢板轧制厚度的增加,铸坯角部横裂纹沿宽度方向延展有加重的趋势;轧制规格相对较薄的钢板的裂纹极微小,有被"撵平"的趋势;毛边钢板的安全切边量为35mm.关键词:板坯； 角横裂纹； 切边量； 钢板边裂......
