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Study on influencing factors of mechanical properties of Ti(C,N)-based cermets Yacong Chai1,a, Hanlian Liu1, b, Chuanzhen Huang1,c, Bin Zou1,d and Huahe Liu1,e 1Centre for Advanced Jet Engineering Technologies (CaJET), Key Laboratory of High-efficiency and Clean Mechanical Manufacture, Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan, 250061, China achaiyacong1989@163.com,blhl70@sdu.edu.cn,cchuanzhenh@sdu.edu.cn,dzb78@sdu.edu.cn, ehuahe.liu@163.com Keywords: Ti(C,N); mechanical properties; sintering process; initial powder size; binder content Abstract.
The content of Mo and Ni as binder phase affects the mechanical properties of cermets, but the view of addition amounts is different [6].
In addition, Zhan [7] has reported that initial powder size will also affect the mechanical properties and microstructure of materials.
Results and discussion Effect of sintering process on mechanical properties of Ti(C,N)-based cermets.
Table 3 Mechanical properties of Ti(C,N)-based cermets with different initial powder size Sample No.

When the slag content is 35%, the physical and mechanical properties of lightweight aggregate concrete small hollow block are the best, and all the indexes of physical and mechanical properties can meet the standard requirements non-bearing lightweight aggregate concrete hollow block.
By varying the content of slag, the effect of the amount of slag on the physical and mechanical properties of light aggregate concrete small hollow block were studied and then the amount of slag was determined to achieve the best physical and mechanical properties.
Table 1 Chemical composition Loss SiO2 Al2O3 CaO MgO P2O5 S MnO TiO2 FeO Fe2O3 SO3 0.07 36.42 10.05 41.62 8.77 0.036 0.88 0.14 0.36 0.40 0.21 0.05 Table 2 Physical properties Density Specific surface Fluidity ratio 7d activity index 28d activity index 2.9 421 100 70 101 Experimental method Design of experimental program Effect of slag which was used as admixture and it’s content on physical and mechanical properties of lightweight aggregate concrete small hollow blocks was investigated in this paper, therefore, we took the slag content as a major factor into consideration; in term of the lightweight concrete which contained mineral admixture, water binder ratio was an important factor which affecting the performance of lightweight concrete.
From the results of the above range and variance analysis, on the basis of following factors water binder ratio 0.39 and admixture dosage 1%(early strength agent)+3%(water reducing agent), the physical properties of 28d block with different slag content were further studied.
（3）Curing system of concrete small hollow block added with slag has important impact on its mechanical properties.

Cause and Effect of Factors Affecting the ΔKth of Small Crack Y.Kondo Department of Intelligent Machinery and Systems, Kyushu University 6-10-1, Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan ykondo@mech.kyushu-u.ac.jp Keywords: Fatigue, Fatigue limit, Small crack, Threshold stress intensity factor Abstract.
The threshold stress intensity factor (ΔKth) of small crack is affected by various factors, especially by material hardness, stress ratio and crack size.
The cause and effect of these factors were investigated.
Chemical compositions and mechanical properties are shown in Table 1.
Chemical composition (wt.%) Mechanical properties (MPa, %) Material C Si Mn P S Ni Cr Mo Cu σy ,σ0.2 σB δ φ HV S25C 0.26 0.20 0.50 0.008 0.023 0.02 0.02 - 0.01 305 544 34.3 59.3 141 S45C 0.45 0.22 0.78 0.020 0.021 0.01 0.15 - 0.01 585 790 27.1 60.9 261 SCM435 0.35 0.19 0.75 0.022 0.014 0.02 1.09 0.19 0.02 870 989 22.4 65.4 305 SCM440H 0.40 0.18 0.81 0.016 0.015 0.06 1.09 0.15 0.08 1003 1124 18.0 54.0 335 SNCM439 0.40 0.19 0.83 0.028 0.008 1.60 0.78 0.15 0.12 1128 1201 17.1 52.2 386 Table 1 Chemical compositions and mechanical properties of test materials.

According to the factors which affected the properties of the composites, the orthogonal table of L9 (34) was adopted.
Table 1 Levels of Factors Levels Factors A B C D Mass fraction of fibers(%) Molding temperature(˚C) Molding pressure (MPa) Molding time (s) 1 10 170 8 360 2 20 180 10 480 3 30 190 12 600 Mechanical properties of the cotton stalk bast fibers reinforced PP Testing of flexural strength.
Mass fraction of fibers was the most important factor which affected the mechanical properties, especially the flexural strength and the tensile strength.
Molding temperature was a factor which affected the mechanical properties a lot.
Molding time was a factor which affected the mechanical properties a little.

The M/A constituent size such as mean diameter and length are important factors influencing Charpy impact properties of the simulated reheated CGHAZ.
M/A particle were main factors in increasing the hardness values in real and simulated IC CGHAZ.
The morphology of M/A constituent is one of the factors influencing impact fracture.
Lee, “Inoculated acicular ferrite microstructure and mechanical properties,” Materials Science and Engineering A, Vol. 319-321, 2001, pp. 326-331
Yang, “Challenge of mechanical properties of an acicular ferrite pipeline steel,” Materials Science and Engineering A, Vol. 431, 2006, pp. 41-52

The compaction curve of the ordinary fine sand is consistent with that of wind-blown sand and the main factors affecting the compaction properties are the grain composition, water content and compaction work.
This paper analyzes and compares the physical and mechanical properties of the wind-blown sands both in saturated and dried conditions, with which the influence of water content on the mechanical properties of the wind-blown sand is discussed.
physical Properties Grain Composition.
The compaction curves indicate that the crucial factors affecting the compaction mechanism are grain composition, water content and compaction work etc.
Compared the compaction curves, the crucial factors affecting the compaction mechanism are gradation, water content and compaction energy.

It selected the transmission system parameters of the mechanical properties and established a servo-mechanical transmission system dynamic model.
At the same time, it analyzed the effect of the nonlinear backlash factors on system performance.
This single stage gear meshing element model considered backlash as the nonlinear factors.
The impact of the backlash factors could be seen on the load-speed condition.
Thus, backlash as a nonlinear factor was more serious factors to affect the system performance.

Through the orthogonal theoretical analysis, it is found that the sequence of the effect of parameters on the mechanical property is: Cooling rate > Heating temperature > Finish cooling temperature > Finish rolling temperature, the cooling rate is the most important factor affecting the inspection target and possesses a great influence on the hardness of the pipeline steel.
The thermo-mechanical control process (TMCP), which determines the microstructures and the mechanical properties, is the critical step to produce the high performance pipeline steel Cooling process after rolling was studied by Wang [3], and effect of finishing temperature and cooling rate on microstructure and properties of pipeline was studied by Liu [4] and Xiao [5], however, only single processing parameter of TMCP, such as finish rolling temperature, final cooling temperature, cooling rate was investigated separately in their results.
The largest value of the orthogonal polar difference in that column implies that the change of level of this factor, will most affect the inspection target, therefore, the factors that we consider are the main factors.
Conclusions (1) The parameters of thermo-mechanical control process (TMCP) of the pipeline steel is studied by using Gleeble-3500 hot simulator as well as the orthogonal experiment with four factors and three levels, it is found that the sequence of the effect of parameters on the mechanical property is: Cooling rate > Heating temperature > Finish cooling temperature > Finish rolling temperature, the cooling rate is the most important factor affecting the inspection target and possesses a great influence on the hardness of the pipeline steel
The specimen with this kind of the microstructure possesses the desired mechanical properties.

Especially for mechanical properties test in heat affected zone of welding joints.
Introduction Nowadays, hardness test and mechanical properties test are commonly employed for testing mechanical properties of steel pipeline welding joint.
Thus, it is suitable for the study on local mechanical properties of material, especially evaluating the mechanical properties or rupture toughness of welding joint.
Basic mechanical properties of metal, e.g. strength, hardness and plasticity, etc., depend mainly on the chemical composition, organizational structure , metallurgical quality, involved stress, surface and internal defects, and other internal factors of material.
Micro Test Methods for Mechanical Properties of Metal.

The factors affecting the meso-structure of soil, for example, stress state, the stress history, the stress path, the variation of groundwater, chemical field, biological field and physical field is discussed.
The mesco-structure [6] reflects its composition form and existing state, and is the internal decisive factors of engineering properties, especial shear strength.
That is the factors influence the mesco-structure also influences of the engineering properties.
The study of mechanical properties of Kunming peat and peaty soil.
Mechanical properties of deep peaty soil.