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The mechanical properties after the short-term heat treatment are not stable.
The applicability of different heating technologies depends on technological and economic factors.
Mechanical properties before forming.
Mechanical properties after artificial aging.
Besides the mechanical properties of the shortterm heat treated zones of a THTB in state W, the mechanical properties in state T6, i.e. after artificial aging have to be studied.

Secondly, test the cohesiveness properties.
The method to text the cohesiveness properties is that,gentlely stick the side of the concrete slump cone already collapsed with vibrating rod,if the cone slides away slowly, then the cohesiveness properties is good；cone collapse, or if there is a segregation phenomenon, the cohesiveness properties is poor.
Slump is the directly expression for the flow properties.
Concrete with good flow properties can be vibrated and operated easily,could’t result in the cellular, pockmarked face of shaft lining .
Affected by the environmental factors in site, the solutions to the problem of slump loss are in mainly three aspects.

Types of Insulator Materials: The insulators preferably should have the desirable properties of high mechanical strength, high electrical resistance, high relative permittivity and high dielectric strength.
Types of Pollution: A particular region and pollution type are inter-related with the basic source of contamination along with the weather factors of that place.
These materials should possess good insulating properties over a wide range of operating parameters.
Nallusamy, (2016), “A review on the effects of casting quality, microstructure and mechanical properties of cast Al-Si-0.3Mg alloy”, International Journal of Performability Engineering, Vol. 12(2), Pp. 143-154 [3] S.
Nallusamy and Gautam Majumdar, (2016), “Effect of stacking sequence and hybridization on mechanical properties of jute-glass fiber composites”, International Journal of Performability Engineering, Vol. 12(3), Pp. 229-239 [14] Zafer and M.

Chemical modification of the Al-Si alloys leads to formation of fine, fibrous Al-Si eutectic mixture ensuring high mechanical properties.
They are easy to cast thanks to their good technological properties and posses acceptable mechanical properties.
However, especially during slow solidification, the silicon tends to form massive, brittle crystals, which decrease alloy’s mechanical properties [4].
These defects significantly affects alloy’s mechanical and fatigue properties.
Bonollo, The influence of Cr content on the microstructure and mechanical properties of AlSi9Cu3(Fe) die-casting alloys Mater.

Research on Cutting Residual Stresses Based on Thermo-mechanical Coupling∗∗∗∗ Y.Q.Xu, S.J.Li, T.Zhang and X.H.Yang (School of Mechanical & Electronic Engineering, Northwestern Polytechnical University, Xi'an Shanxi ,710072, China) Keywords: machining, residual stress, thermo-mechanical coupling, finite element Abstract.
It is very critical to find a precise solution to predict residual stresses in a machined component given the process parameters and material properties.
The mechanism of thermo-mechanical coupling is unknown to us.
Factor affecting the cutting residual stress Cutting force.
Thermo-mechanical model of finite element theory.

Different parameters are used to evaluate the machined surface quality; roughness, residual stress and white layer are the most common factors that affect the surface integrity.
Residual stress, in addition, are one of the main factors that influence the component fatigue life.
Superficial residual stresses depend on different factors, such as cutting parameters and tool geometry.
The poor machinability of the nickel-based alloys is due to their inherent properties, which include: high hot hardness and strength, high dynamic shear strength, rapid work hardening, low thermal diffusivity [1].
The Waspaloy material model includes the following properties: deformation hardening, thermal softening and rate sensitivity, associated with a transient heat conduction analysis for finite deformations.

Field investigation indicated that the degree of unloading in the rock masses on the left bank is related to the formation of fractures with medium dip angles. unloaded fracture zones (XL316-1 and XL9-15) with medium dip angles and faults f231, f208 revealed are the major factors affecting the overall stability of the right slope.
One of the representative methods is the Hoek-Brown empirical criterion (Hoek, 2002).The quantified rock mass classification system based on the geological strength index (GSI) with volumetric joint count Jv and the joint condition factor JC and the Hoek-Brown failure criterion are applied to evaluate the mechanical parameters of rock mass (Yang, Z., et al. 2010, Li, T.L. et al. 2004, Liu, D.Y., et al. 1998,).
The macroscopic properties are then derived from the mesoscopic behaviours by volume averaging (Tan, W.H., et al. 1999, Liao, Q.L., et al. 2005). (4) The fracture network simulation method (Hu, X.R., et al. 2005, Qiu, S.H., et al. 2005).
Table 5 The mohr envelop parameters obtained by numerical loading tests Rock mass classification NO. ① ② ③ ④ ⑤ ⑥ (Mpa) 1.75 7.95 11.3 10.8 12.6 22.9 a(Mpa) -1.38 -6.94 -9.60 -9.53 -1.07 -2.08 b(×1E-7) 6.66 3.21 2.29 2.61 2.27 1.38 Conclusions Based on the laboratory experiments on mechanical properties of rock blocks and field tests on single fracture plane, the mechanical parameters are transformed into the mechanical parameters of rock masses by stochastic mechanical analysis of the characteristic element in rock masses.The stochastic mechanical analysis method and the calculated mechanical parameters of rock mass can reflect the strength characteristics of rock masses in the field.
Determination of mechanical parameters of rock mass from Yunxi Datun Tin Mine.

Hardness profiles were measured across the weld metal, heat-affected zone (HAZ), and base metal.
This form of cracking typically occurs in the heat-affected zone (HAZ) of weldments as a result of an interaction among three key factors: namely, diffusible hydrogen, tensile residual stresses, and a susceptible microstructure​ [1-2].
Factors such as elevated hardness values and high residual stress concentrations in the CGHAZ are known to promote crack initiation and propagation​.
It indicated that a clear correlation between these two properties, indicating that changes in grain size have a direct influence on the hardness of the weld.
Effect of cooling rate on microstructure and mechanical properties in the CGHAZ of electroslag welded pearlitic rail steel.

The interfacial transition zone is a key link of making the cement paste and aggregate as whole, and its properties play a decisive role on the properties of concrete.
As for NC, the properties of interface transition zone are mainly depended on the properties of cement paste.
The main factors that affect fire-resistance performance of concrete are: materials of cement and aggregates, internal moisture content, internal organization structures, stress state, the distribution of temperature field, temperature heating rate, maximum temperature and the sustained time.
At present, the variation rules of mechanical properties of LWAC with regard to the high temperature need thorough and systematic research [2, 3].
By heating the ceramsite LWAC test blocks at different temperature levels, the corresponding loading test was carried on after natural cooling, and the changes of mechanical properties of ceramsite LWAC was studied.

It is known that the influence of GBs on mechanical properties becomes considerable when the grain size is below 500 - 1000 nm.
Zhang, Structure and mechanical properties of nanostructured Al–Mg alloys processed by severe plastic deformation, J.
Valiev, Nanostructure and related mechanical properties of an Al-Mg-Si alloy processed by severe plastic deformation, Phil.
Matthews, Mechanical properties of nanocrystalline nickel produced by electrodeposition, Nanostr.
Langdon, Factors influencing the flow and hardness of materials with ultrafine grain sizes, Phil.