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Therefore, in order to overcome these adverse factors, magnesium phosphate cement repair materials emerged as the times require.
(2) Too much borax has an adverse effect on the mechanical and durability properties of MKPC.
Properties and applications of magnesia-phosphate cement mortar for rapid repair of concrete[J].
Effectc of different temperature treatment to properties of magnesium phosphate cement[J].
Effect of borax on hydration and hardening properties of magnesium and potassium phosphate cement pastes[J].

Fatigue Properties of a T Type Welded Joint in a Small-sized Single Pass Boiler Header H.Yamakawa1, a, N.Yan 2, b, D.Yonekura 2 and R.Murakami2 1 Miura Co., Ltd., Japan 2 Dept. of Mech.
Chemical composition and mechanical properties of SS400 are shown in Table 1.
Table 1 Chemical composition and tesile properties of SS400.
It is clear that the weld penetration markedly affect the fatigue strength.
The stress concentration factor, Kt, at the toe of weldment was calculated from FEA results.

The mechanical behavior and failure mechanism of all specimens were studied, failure modes were revealed, and important experiment data were also obtained, such as cracking loading, ultimate loading, crack development shape, crack width and so on.
Research results showed that failure modes of specimens were similar to “less-reinforced beams”, based on limit state design method in normal use, security surplus factor is 1.27 before collapse damage.
Exposed in the open air environment, the surface layer of pole sometimes peels off, and the life and mechanical properties of the poles are reduced greatly by aging disease phenomena, thus affecting the safety operation of power systems[5~8].
Taking into account the importance of development of the cement pole industry to our industry construction, mechanical properties of reinforced concrete pole in the service period in an operating transmission line was studied in this paper.

Material Factors Analysis of the Cracking in 0Cr12Mn5Ni4Mo3Al Stainless Steel Pipe Sleeve on Aircraft Flare-less Pipe Joints Fuguo Li1, 2, a, Fengmei Xue1, b, Wenjun Yu3, c and Jianfei Li3, d 1School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, China 2State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, China 3Department of Manufacturing Engineering, Chengdu Aircraft Industry (Group) Limited Company, Chengdu, Sichuan, 610092, China afuguolx@163.com, bxfm-2002@sohu.com, cywenjun_2005@yahoo.com.cn, dliaddy2002@yahoo.com.cn Keywords: 0Cr12Mn5Ni4Mo3Al, Cr/Ni Equivalent Ratio, Ferrite, Microstructure, Fracture Analysis Abstract.
The material has good shaping and welding properties, which is appropriate for manufacturing aerocraft members, elastic elements working below 350˚C, through proper cold deformation, cold treatment and aging treatment.
However, the mechanical properties of 0Cr12Mn5Ni4Mo3Al high strength stainless steel are susceptible to the compositions and microstructures.
The mechanical properties of 0Cr12Mn5Ni4Mo3Al are stable when it is as macro-rod, flat steel and strip steel, but it is equal to a thin-walled pipe which is easy to cause fracture when it is processed into pipe sleeve form billet.
The higher hot working temperature will produce many ferrites, and the increase of ferrite will form lath-shaped textures, which distribute along the austenite grain boundary and affected by the recrystallization process.

Introduction It is known that the production of cold-resistant welds of high strength steels is very difficult because of a number of specific factors.
Therefore, in general, in X-ray exposure of the material comprising a mixture of multiple phases an X-ray pattern is obtained, which has lines of all the phases included in the sample [6] The intensity of the lines of various phases on the X-ray pattern depends on many factors including the amount of a particular phase.
Mirkin, X-ray inspection of engineering materials, Mechanical Engineering, Moscow, 1979 [7] Y.N.
Tyutev, Fatigue failure and properties of welded joints of pipelines in Siberia and the Far North, Mounting and special works in construction. 8 (2005) 18-22
Gladkov, Automation and automation of welding processes, Mechanical Engineering, Moscow, 1982

The production of cold-rolled sheets is correlated with the rolling of metals with various mechanical properties and formability, a changing reducing passes, variable rolling speeds, thermal metal heating, wear of working rolls, tension between stands and other factors.
These factors significantly affect to the conditions for the formation of barrel profile of working rolls, which should provide the necessary level of residual stresses and strains in sheet metal products, and the required flatness of sheets and strips.
During cold rolling the form of the roll gap is not constant [5], and depends on the properties of the metal, the type of mill, the rolling pressure, the length of the rolls, the location of the back-up rolls and other factors [6] that affect to the flatness of the rolled products and should be taken into account in AASPS of the strip.
At the same time, consideration of the properties of materials, hardening during cold deformation [13, 14], is not given enough attention.
The authors took into account many factors here (the temperature field of the rolls, the temperature field of the strip, the rolling speed (bite), the tension of the strip, and others) that affect to the size of the strip-crown.

Results of non-destructive tests performed on welded joints are presented in this paper (magnetic particle and ultrasonic inspection), as well as results of destructive tests of the base material and welded joints (testing of tensile properties, impact testing, metallographic analyses of the structure).
For the testing of mechanical properties in the longitudinal (marked as u in figure 4a) and transverse direction (marked as p in figure 4b) of the 40 mm thick metal sheet, circular cutting has been performed in order to obtain a sample with diameter of 380 mm from the internal wall (internal coating) of segment 4-1 of the upper ring of guide vane apparatus, as well as cutting of the 450 mm long sample from the welded joint of the 50 mm thick metal sheet (welded joint V50) for metallographic testing of base material and of the welded joint, or, more precisely, of the material from heat-affected zone and of weld metal from the flange of the upper ring of guide vane apparatus, taken from segment 3-4.
Results of tensile tests showed that tensile properties of base material meet the requirements of standards EN 10002-1 and GOST 14637 for steel St 3 [10], table 2.
Geometrical properties of cross-sections of welded joints of the upper ring of guide vane apparatus, according to project documentation, are presented in fig. 3.
[11] EN 10164, Steel products with improved deformation properties perpendicular to the surface of product - Technical delivery conditions, 2004

The influence of TMT and cooling rates on the final magnetic properties of the alloy were investigated.
Introduction Fe-Cr-Co is magnetically hard alloy having good magnetic properties in combination with high mechanical characteristics.
These results suggest that microstructural properties are affected by the mode of quenching.
Magnetic properties analysis: The two major factors that influence the magnetic properties are volume fraction of the spinodal decomposition product phases along with their shape and their composition difference.
Upon the decomposition, molybdenum concentrates in paramagnetic phase α2 and causes lattice parameter difference between α1 and α2 phase, thus affecting the morphology of the precipitated phases [1,5,6].

The micro- structure, mechanical properties and wear resistance of the gradient composites were investigated.
And the microstructure, mechanical properties and wear resistance of the gradient composites with different WCP volume fraction are investigated in the paper.
The specimens of the composites for metallographic, wear and properties tests were cut off by line cutting method.
The mechanical properties were measured by an impact tester, a hardness tester and a universal tensile test machine.
Table1 Mechanical properties of the gradient composites Testing materials Tensile strength (MPa) Impact toughness (J cm -2) Hardness (HRA) Composites (70 vol.% WCP) Composites (54 vol.% WCP) High speed steel 345 460 535 4.6 6.2 3.5 81.0 78.2 83.5 μ 150μm μ 150μm Fig.1.

Comparatively, zirconia has mechanical and biological properties that are similar to those of titanium [11].
b a Figure 2. a) Case 2: Periodontal disease affecting inferior incisors; b) Case 2: High bone loss between 4.3 and 4.2.
While the implants made entirely of zirconia are capable of withstanding simulated long-term loads, the mechanical properties of zirconium seem to be influenced largely by the mechanical preparation of the material [9, 10, 13, 17, 18].
This was due to healing enhanced by the growth factors.
Conclusions The case-studies presented in this paper demonstrated that PRGP factors enhanced bone and tissue healing in post-extraction alveoli.