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Effects of pitting corrosion on fatigue life of aluminum alloy Y12CZ based on initial discontinuity state YU Da-zhao(郁大照) 1, CHEN Yue-liang(陈跃良)2, HU Jia-lin(胡家林)1, YANG Mao-sheng(杨茂胜)1 1. Naval...: Based on initial discontinuity state (IDS) of material, a preliminary analytical model was presented to evaluate the effect of interaction of pitting corrosion and fatigue loading on the residual......
to the existence of prior particle boundary (PPB) in P/M superalloys. The inter-particle rupture morphological characterization and type on low cycle fatigue (LCF) fracture of a nickel-based P/M superalloys... serious inter-particle fractures affects fatigue lives more. Key words: P/M superalloy; prior particle boundary; inter-particle rupture; low cycle fatigue fracture 基金项目:国家重点基础研究发展计划资助项目(2010CB631204)；中俄政府间......
for effect of microstructure on damage tolerance properties. Key words: damage tolerance titanium alloy; microstructure; fatigue crack propagation rate, fracture toughness 钛及钛合金由于具有密度低,比强度高,耐高温,耐腐蚀,可焊性好...件下片状组织与双态组织的疲劳裂纹扩展特性.研究结果为高损伤容限型钛合金的微观组织设计和探讨微观组织对损伤容限性能的影响机理提供便利. 关键词:损伤容限钛合金；显微组织；疲劳裂纹扩展速率；断裂韧性 中图分类号:TG146 文献标志码:A Fatigue crack propagation behavior of TC4-DT damage......
is studied. The fatigue Smax-N curves are tested at different heat treatment status and average stresses. The typical fatigue fracture surfaces are observed and analyzed by SEM (scanning electron...纹扩展区 中图分类号:TG 113 文献标志码:A Fractograph and fatigue behavior of TC18 titanium alloy lugs LIU Cui-yun, LI Huan-xi, MA Chao-li (Key Laboratory of Aerospace Materials......
晶断裂模式(见图3(e)),由于温度较高,氧化加剧,疲劳条带不清晰(见图3(f)). 图3 不同温度下裂纹扩展试样的断口微观形貌 Fig. 3 Fracture surfaces of fatigue crack growth specimens at different temperatures 室温时,二次裂纹仅由碳化物本身开裂或者碳化物与基体的界面开裂形成,但是温度... behavior of new Ni-based alloy[J]. Materials Science and Engineering A, 2008, 474: 30. [2] ZHENG X L, HIRT M A. Fatigue crack propagation in steels[J]. Engineering Fracture Mechanics, 1983, 18......
and coarse second phase on the sub-surface. A large number of striations are observed in the fatigue propagation zone, and a mixture of small dimples and cleavage is observed on the fracture surface in the fatigue fracture zone. Key words: 7475 aluminum alloy; fatigue property; anisotropy; fatigue crack growth rate Al-Zn-Mg-Cu铝合金强度高,密度低,在航空工业中有着广泛的应用,特别是用作飞机的结构件.在服役过程中,飞机的结构件往往会受到交变载荷的作用,因此不仅要求材料具有高的强度......
M. Calculation of the crack tip parameters in the holed-cracked flattened Brazilian disk (HCFBD) specimens under wide range of mixed mode I/II loading [J]. Fatigue & Fracture of Engineering... J. Cent. South Univ. (2020) 27: 2440-2454 DOI: https://doi.org/10.1007/s11771-020-4460-5 Effect of loading rates on crack propagating speed, fracture toughness and energy release rate using single......
for magnesium and its alloys. Especially, {1011} twin is usually thought to be closely related to the fracture or fatigue process of magnesium alloys. In the present work, the characteristics of microstructure...Towards understanding twinning behavior near fracture surface in magnesiumHao Li1,Qinghui Zeng2,Pengfei Yang3,Qi Sun1,Jianmin Wang4,Jian Tu5,Minhao Zhu11. Key Laboratory of Advanced Technologies......
alloys at specified △K 图7 △K=15 MPa·m1/2时不同合金疲劳裂纹扩展断口形貌 Fig. 7 SEM images of fatigue fracture surfaces for different alloys at △K of about 15 MPa·m1/2 3 分析与讨论 3.1 疲劳裂纹萌生 高周疲劳中疲劳... 疲劳失效裂纹萌生处断口形貌 Fig. 9 Fractographs of different alloys after fatigue fracture 表5 疲劳裂纹萌生处粒子能谱分析 Table 5 EDS analyses of particles at initiation point of fatigue crack show in Fig. 9......
Improvement of Fracture Toughness Lanthanum Zirconate DAI H1,CAO X Q1,LI Q1,LI J Y1,ZHONG X H1 (1.Key Lab of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese... temperature applications. The fracture toughness and microhardness of nanocrystalline LZ (n-LZ), microcrystalline LZ (m-LZ) and LZ-5mol%8YSZ (LZ-5-8YSZ) composite (8YSZ for zirconia stabilized by 8 mol......
