What Should One Note in the Selection of the bronze?

Often hear people say that steel is the soul of bronze tool, but friends generally play the bronze knife, if not mechanical majors in college, when the nature of the features mentioned bronze blade steel or heat, most easily confusing source is the meaning of some of the mechanical properties, such as bronze blade strength, hardness or toughness, this article will first give Members a brief introduction to the basic definition of the strength of the mechanical properties and physical meaning. Especially the animal patterns on the bronze like the fantasy animals are unique and particular. As for the mechanical properties of hardness, toughness and other mechanical properties practical application in the choice of bronze tool will be introduced in the follow-up article for you.
     First of all, tell you to talk about the strength of steel, the strength of the special nature of a material, the test materials into rod-shaped or plate tensile test bar (see Figure 1) to the tensile test machine (Figure 2) to the tensile test, by the elongation of the test shots and suffered loads (tensile strength) mapping the load - elongation diagram (c) or stress - strain diagram (Figure , e), from the stress - strain diagram, to quantify the definition of the strength of the material. Different materials tensile test diagram (above medium carbon steel, the bottom of copper or aluminum. Figure 5 non-ferrous metals, engineering stress-strain and true stress-strain diagram. These decorations were seen as representatives of bronzeof China.
Before actually entering the definition of intensity should talk to introduce two terms: the stress and strain. The stress is suffered by the test rod force (or load) in addition to its cross-sectional area ratio, that of F / Ao, if the F is the pressure, then on a similar pressure values we learned in physics class. Taotie motif, also known as animal mask common on the bronze, is the most common and also the most representative one.  The definition of stress, the load was divided by cross-sectional area, with the aim to remove the impact of material the size of its can bear the force. For example, the same steel products such as hair thickness, can the power of the load may be less than one kilogram; but if its diameter into a 10 cm thick, then it can withstand the force of more than 10 tonnes.
But they are the same material, its intensity should be the same, so as to remove the impact of the volume of material, the definition of the load divided by the material of the cross-sectional area for the stress, it is independent of stress and material. Similar situation, the project will be material force elongation (d) Subject to its original length (Lo) is called the strain value (d / Lo), to remove the material the length of the deformation. Stress and strain of these two terms will be our follow-up discussion of a number of important related, we try to understand. The basic shape of the taotie engraved on the bronze is a frontal ferocious and terrible monster.
  For general metal test rod in the process of stretching the length change is like a spring force tensile test rods first will produce elastic deformation, the test rod to comply with Hooke's theorem (F = the KX) , that is suffered by the force (F) and its elongation is proportional to (X) (K is the spring coefficient of elasticity). Therefore, the corresponding stress-strain diagram, this section area was a straight line linear, the slope of this straight line we call the Young's modulus or modulus of elasticity E value (E), its value represents the elastic deformation of the material by the force degree of difficulty, to be simple, similar is the spring K value, the spring K value the greater the elasticity the greater. As a cultural product of imagination, the prototype of the bronze is not easy to verify.