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deformation steady value was obtained from the creep tests under low loading stresses. By the least square method, the parameters of Nishihara creep model were calculated from the creep curves. The results..., during which the strain rate decreases and the deformation stabilizes over a long time; 2) Secondary creep phase, or steady-state creep, during which the strain rate remains constant; 3) Tertiary creep......
Cyclic Creep Deformation and Fracture of a Cr-Mo Rotor Steel at Elevated Temperatures朱世杰,阳志安,王中光摘 要:<正> Static creep and cyclic creep tests were carriedout on a Cr-Mo rotor steel from 0.5 to 0.6 Tm.Cyclic creep retardation occurred under the testconditions.With an increase of stress frequency,cyclic creep strain rate decreases and rupture......
Creep Deformation and Rupture in Smooth and Notched Specimens in HK40 Steel朱世杰,赵杰,王富岗,曹智本摘 要:<正> The effects of the eutectic carbides randsecondary carbides on creep deformation andrupture in smooth bars and CT specimens havebeen studied. The results show that the resistanceof the eutectic carbides of skeleton shape tocrack growth is larger than......
Investigation of Creep Feed Grinding Parameters and Heat treatment Effects on the Nickel-base Superalloys Hasan Jamshidi1,Sayed Ali Sadough Vanini1,Alireza Attari2 (1.Mechanical Engineering.... The formation of a plastically deformed and heat affected zone during grinding of Superalloy IN738LC with a high depth of cut but slow work speed (creep feed grinding) was investigated. Parameters......
the creep deformation and the settlement of the road structures, even to affect the driving comfort so as to traffic accidents easily [5–7]. Hence, due attention should be paid to the dynamic stress... of the creep deformation which causes stress accumulation in the soil, furthermore build up the stress accumulation model by the stress–strain relationship. Based on this understanding, this work......
during high temperature deformation. Fig.7 shows the optical images of the alloys during the creep test at 200 ℃, 70 MPa and 48 h. The thermally unstable Mg17Al12 phases coarsened due... Microstructure and creep properties of Mg-4Al-2Sn-1(Ca,Sr) alloys B. H. KIM, K. C. PARK, Y. H. PARK, I. M. PARK Department of Material Science and Engineering, Pusan National......
rheology; creep, mechano-sorptive creep; drying stress; deformation set 1 Introduction As a kind of excellent regenerative nature engineering material, wood has fine strength-weight ratio, low heat... model considers the deformation under constant temperature and moisture. In fact, woods are usually used in a dynamic environment of temperature and moisture. Mechano-sorptive creep......
of disturbance creep preliminarily by adopting longitudinal compression model of rock beam and combining with creep behavior of deep rock. It is very helpful for studying rock strata deformation...J. Cent. South Univ. Technol. (2008) 15(s1): 438-442 DOI: 10.1007/s11771-008-395-y Rock bending creep and disturbance effects FU Zhi-liang(付志亮)1, 2, ZHENG Ying-ren(郑颖人)2, LIU Yuan-xue(刘元雪)2 (1......
Subtransus deformation mechanisms of TC11 titanium alloy with lamellar structure SONG Hong-wu(宋鸿武), ZHANG Shi-hong(张士宏), CHENG Ming(程 明) Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China Received 13 October 2009; accepted 23 August 2010 Abstract: Isothermal compression tests are applied to study the deformation mechanisms of TC11 titanium alloy with lamellar......
