What are the objectives of heat treatment of metals, Chemistry

Assignment Help:

What are the objectives of heat treatment of metals?

Objectives of heat treatment-

Cause relief of internal stresses developed during cold working, welding, forging, casting etc. Harden and strengthen metals. Change grain size. Improve machinability. Soften metals for further working as in wire drawing or cold rolling. Improve toughness and ductility.

Increase, wear, heat and corrosion resistance of materials. Improve magnetic and electrical properties. Homogenise structure to remove coring or segregation. Spheroidize tiny particles, like those of Fe2C in steel, by diffusion.

Some of the precautions to be carried out when heating are - Metal/alloy has to be heated to a definite temperature. Holding at that sufficient temperature to allow change to occur. Tempering relieves residual stresses, improves ductility. Improve toughness, and reduces hardness increase % elongation.

 


Related Discussions:- What are the objectives of heat treatment of metals

Hypothetical variation, Read the recent tribunal case  Taylor v Archicentre...

Read the recent tribunal case  Taylor v Archicentre Ltd   (General) [2012] NSWCTTT 348 (a)       Provide a summary account of the key material facts concerning the architectu

Determine the crystal field stabilization energy, 1. (a)  Reacting Pt 2+ w...

1. (a)  Reacting Pt 2+ with two equivalents of each of the ligands NO 2 - and en, it is possible to prepare several complexes that could be described as both geometric and  opti

Describe conformation energy profile -ethane, Describe Conformation energy ...

Describe Conformation energy profile -Ethane   Conformation energy profile for ethane

Physical and derived quantities, 1. Discuss how such discoveries, technolog...

1. Discuss how such discoveries, technological advancement and breakthroughs were achieved and the person behind this advancement, it can be local or international. 2. List the ma

Ch 2 atomic structure of class 11, If the velocity of hydrogen molecule is5...

If the velocity of hydrogen molecule is5*10^4 cm/sec tjen its de broglie wavelength is

Atoms and molecules , what is laws of chemical combination............answe...

what is laws of chemical combination............answer should be in 250 words

What is base units, Q. What is Base units? There are seven base units g...

Q. What is Base units? There are seven base units given in SI. A base unit is a unit of calculate that is based on an object or event in the physical world. Lists of the seve

Substrate concentration , How does the substrate concentration affect the s...

How does the substrate concentration affect the speed of enzymatic reactions? Ans) Initially as substrate concentration enhances the speed of the reaction enhances, this happens

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd