What is alpha and beta in phase diagram?

Asked By: Romualdas Peiffer | Last Updated: 16th March, 2020
Category: science chemistry
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The extent of the solid solubility region can be plotted onto the phase diagram. In this example, the alpha phase is the region of solid solution where some of B atoms have dissolved in a matrix of A atoms. The beta phase is the region where a small percentage of A atoms have dissolved in a matrix of B atoms.

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Hereof, what is alpha and beta phase?

In titanium processing: Alpha and beta phases. The atoms of pure titanium align in the solid state in either a hexagonal close-packed crystalline structure, called the alpha (α) phase, or a body-centred cubic structure, called the beta (β) phase.

Similarly, what is a beta personality? Beta Male. Betas are reserved, responsible and moderate: your average Mr Nice Guy, nothing spectacular but likeable enough. Most modern men are Betas; they're more sensitive, less aggressive, and better read than Alphas. They are easily nervous or embarrassed and play wingmen to their more suave Alpha friends.

Also to know, what is the tie line in phase diagrams?

An isothermal (constant temperature) line through the alloy's position on the phase diagram when it is in a two phase field, intersecting the two adjacent solubility curves, is called a tie line (yes, that's the horizontal yellow line on the diagram).

What is alpha vs beta testing?

Alpha testing is performed by testers who are usually internal employees of the organization. Beta testing is performed by clients who are not part of the organization. Alpha testing is performed at developer's site. Beta testing is performed at end-user of the product.

39 Related Question Answers Found

What does it mean to be alpha or beta?

Essentially, an alpha male is the leader or most dominant man (mentally or physically) in a situation. A beta male is the male below him (or second in command) and an omega male is the lowest ranking male.

How do you calculate alpha and beta?

Alpha is an index which is used for determining the highest possible return with respect to the least amount of the risk and according to the formula, alpha is calculated by subtracting the risk-free rate of the return from the market return and multiplying the resultant with the systematic risk of the portfolio

What is an alpha phase?

Alpha. The alpha phase of the release life cycle is the first phase to begin software testing (alpha is the first letter of the Greek alphabet, used as the number 1). In this phase, developers generally test the software using white-box techniques. At this time, the software is said to be feature complete.

What comes first Alpha or Beta?

Pre-Alpha is the version before the Alpha version, Alpha is the version before the Beta version, Beta is the version before the Gamma version, Release Candidate is the version just before the release.

What is Alpha Beta Release?


Beta releases are early versions of the next major update. They follow the alpha release and are typically made available 2 to 4 weeks before the final stable release. They have been thoroughly tested by our team, but may still contain bugs that need to be fixed.

What is the mean of beta?

Definition of 'Beta' Definition: Beta is a numeric value that measures the fluctuations of a stock to changes in the overall stock market. For example, if a stock's beta value is 1.3, it means, theoretically this stock is 30% more volatile than the market.

What are the types of phase diagram?

There are three main types of binary phase diagrams : Complete solid and liquid solution diagram, Eutectic diagram (including Eutectic diagram with partial solubility of the components in solid state and Eutectic diagram with intermetallic compound) Peritectic diagram.

What is eutectic phase diagram?

The binary eutectic phase diagram explains the chemical behavior of two immiscible (unmixable) crystals from a completely miscible (mixable) melt, such as olivine and pyroxene, or pyroxene and Ca plagioclase. They are immiscible because they have different crystal structures.

What is isomorphous phase diagram?

Isomorphous 1
Phase diagrams represent the relationship between temperature and the composition of phases present at equilibrium. An isomorphous system is one in which the solid has the same structure for all compositions. The phase diagram shown is the diagram for Cu-Ni, which is an isomorphous alloy system.

What is a peritectic point?


Peritectic point - The point on a phase diagram where a reaction takes place between a previously precipitated phase and the liquid to produce a new solid phase. When this point is reached, the temperature must remain constant until the reaction has run to completion. A peritectic is also an invariant point.

What do you mean by phase?

In chemistry and physics, a phase is a physically distinctive form of matter, such as a solid, liquid, gas, or plasma. Phases are different from states of matter. The states of matter (e.g., liquid, solid, gas) are phases, but matter can exist in different phases yet remain in the same state of matter.

What is a Proeutectoid phase?

Proeutectoid signifies is a phase that forms (on cooling) before the eutectoid austenite decomposes. It has a parallel with primary solids in that it is the first phase to solidify out of the austenite phase.

What do you mean by eutectic point?

eutectic point (plural eutectic points) The point in a phase diagram indicating the chemical composition and temperature corresponding to the lowest melting point of a mixture of components.

What is unary phase diagram?

A unary phase diagram plots the phase changes of one element as a function of tempera- ture and pressure. A binary diagram plots the phase changes as a function of temperature for a system with varying composition of two com- ponents. Phase diagrams are usually constructed with a constant pressure of one atmosphere.

What is Triple Point in phase diagram?


Triple point – the point on a phase diagram at which the three states of matter: gas, liquid, and solid coexist. Critical point – the point on a phase diagram at which the substance is indistinguishable between liquid and gaseous states.

What is 3phase diagram?

Three Phase Diagram: A soil mass consist of the solid particles and the voids in between them. So there is a three phase system, but when the voids are only filled with air, or only filled with water then soil becomes a two phase system. Three phase system can be represented with a diagram as shown below.

What is the importance of phase diagram?

Phase diagrams can be used to predict the phase changes that have occurred in an alloy that has been exposed to a particular heat treatment process. This is important because the properties of a metal component depend on the phases present in the metal.