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method. Local creep deformations of the dissimilar welded joints were measured by a long-term local creep deformation measuring technique. The creep rupture testing was performed for Cr5Mo dissimilar... welded joint; carbon migration; creep rupture; local-ized deformation; [全文内容正在添加中] ......
; and T is absolute temperature. Q and n are two important mechanical and thermodynamic parameters for describing the creep deformation of solders. Eq.(1) can be further simplified as ... the best-fit of exponent parameter n. Creep deformation mechanisms are identified by the values of the stress exponent n and the activation energy Q[21]. Dislocation creep occurs as a result......
Coupling phase field with creep damage to study γ’ evolution and creep deformation of single crystal superalloysMin Yang1,Jun Zhang1,Weimin Gui2,Songsong Hu1,Zhuoran Li1,Min Guo1,Haijun Su1,Lin Liu11... with elastoplastic de fo rmation and creep damage has been built to study the micro structural evolution and deformation behavior for Ni-Al single crystal alloy during the whole creep processing.The......
coating; tension deformation; nano-indentation; creep 1 Introduction The nickel electrodeposited carbon steel sheet can be prepared by bilaterally electrodepositing nickel on low carbon steel sheet... deformation on the micro-structure and mechanism, such as hardness, elastic modulus and creep of electrodeposited nickel coating were experimentally studied by SEM, XRD and nano-indentation methods. 2......
alloy; microstructure; creep deformation; Mg-Zn phase; dynamic precipitation ... morphology of second phases in magnesium alloys with a high zinc content. The morphology and chemical composition changes of intermetallic compounds taking place during creep deformation were also......
. Oxford, UK: Pergamon, 1985: 803-808. [7] SUZUKI M, SATO H, MARUYAMA K, OIKAWA H. Creep behavior and deformation microstructures of Mg-Y alloys at 550 K [J]. Materials Science and Engineering A, 1998... applications [J]. International Materials Reviews, 2004, 49(1): 13-30. [15] VAGARALI S S, LANGDON T G. Deformation mechanisms in h.c.p. metals at elevated temperatures (I): Creep behavior of magnesium......
fluctuation and smoother creep strain-time curves can be obtained by this power function model at the same stress level. The validity and adaptability of the model to simulate creep deformation of salt rock are verified through comparing the laboratory creep test curves and the Burgers model fitting result. The numerical results reveal that this model can be capable of capturing the creep deformation......
and creep time was studied. The creep rate of some mechanisms were calculated. The results show that the dislocation mechanism is possible. The deformation mechanism is dislocation slipping on basal plane, and twinning improves creep deformation.
Key words: magnesium alloy; room-temperature creep; twinning; slipping
the creep deformation. Thus, it is concluded that the transitions in the microstructures result in the degeneration of the creep rupture properties of the experimental alloy with aging time. Key words... stress of 370 MPa 3.2 Deformed microstructures Figure 6 shows the typical dislocation microstructures of M4706 after different heat treatments and creep deformation at 870 °C and 370 MPa. Although......Influence of long-term isothermal aging on microstructure and creep rupture properties of Ni-base superalloy M4706
来源： 《中南大学学报(英文版)2020年第2期》——张鹏 宋小龙 段宇浩 李娇 LI Bo(李波) 巩秀芳 杨功显
distribution of precipitates in the matrix. Meanwhile, extensive investigations have been carried out on the influence of pre-deformation and stress on the micro-precipitates and creep behavior of Al-Cu-Li... plays an important role in the microstructural evolution of Al-Li-S4 aluminum alloy under creep aging deformation. The increase of temperature markedly changes the precipitation behaviors and leads......
