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such as E10 and M10 alloys. Whether the EA356 alloys or MA356 alloys, the alloys with 0.1%Ti have higher plastic strain energy density and low cycle fatigue life compared with that of alloys with 0.14% Ti. The fatigue life is insensitive to the titanium alloying method. If alloys have the same titanium content, two kinds of alloys have similar low cycle fatigue life. Key words: A356 alloys; cyclic......
words: A356 alloys; low cycle fatigue; cyclic hardening; fatigue life A356合金因具有优良的铸造性能,热处理性能,加工性能,疲劳性能以及良好的强度与塑性,已成为汽车和摩托车轮毂产业使用最为广泛的Al-Si系列铸造合金[1-2].目前人们对A356合金的研究主要集中在晶粒细化,熔体处理和组织衰退等微观组织结构以及硬度,强度... Al-7%Si-0.4%Mg alloys with fine effective grain structure[J]. Materials Science and Engineering A, 2001, 308: 225-232. [6] ZHANG B, CHEN W. Effect of solidification cooling rate on the fatigue life......
. Near the surface, yield strength and hardness are found to be increased by the laser shock. The ratio of fatigue crack initiation life for the laser-shocked to unshocked specimens is found to be 4.9... can significantly improve properties and control the development and growth of surface cracks[10]. Many of the proposed applications of LSP aim at increasing fatigue life and fatigue strength......
were discussed. Eventually, the damage evolution and fatigue life of recycled concrete were investigated using the inverted-S damage model. The results indicate that many methods such as elastic modulus... of fatigue life of recycled concrete agrees well with the experimental result. Therefore, the inverted-S damage model is very suitable for the description of damage evolution of recycled concrete for its......
:TG 156 文献标识码:A Influence of laser-shock processing on fatigue life of titanium alloy REN Xu-dong1, ZHANG Yong-kang1, 2, ZHOU Jian-zhong1, GU Yong-yu1, ZHANG Xin-quan1 (1... was analyzed, and the effects of the surface residual stress and roughness on aircraft structures fatigue life were investigated by the theory of fracture dynamics. The results show that with the logical......
the raceway roundness error was established. Based on this model, the rotational accuracy and load distribution of CRBs under constraints of geometry and external loads were derived. The fatigue life of CRBs..., such as rotational accuracy, load distribution, and fatigue life, was studied through the analysis of examples. The results indicate that the influence of roundness error on the rotating inner raceway is more......
as specimen fracture or 20% drop in maximum tensile load. 3 Low-cycle fatigue behavior The fatigue life data of plastic, elastic and total strain amplitude vs. reversals to failure (2Nf) are shown in Figs.2 and 3. The plastic and elastic strain amplitudes and the corresponding stress amplitudes are obtained at a half of the cyclic life. The fatigue life data can be described in the following......
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Trans. Nonferrous Met. Soc. China 22(2012) 2930-2936 Fatigue behavior and life prediction of A7N01 aluminium alloy welded joint LIU Xue-song1, ZHANG Liang1, WANG Lin-sen1,2, WU Shuang-hui1, FANG... Received 8 March 2012; accepted 27 July 2012 Abstract: Fatigue characteristics of A7N01 aluminium alloy welded joint were investigated and a fatigue crack initiation life-based model was proposed......
limits the application of the hybrid reliability in civil engineering. The main objective of this work is to provide a two-phase hybrid reliability model to assess and predict the fatigue life...; (19) As to the fatigue life with low stress amplitude loadings that Seq≤[S], CONNOR et al [20] analyzed the details with the fatigue test data......