Is there a method of lowering linear expansion of a material?

  1. Hi,

    I was just wondering if it was possible to change the linear expansion (and expansion in volume as volume expansion is three times the linear expansion) of a certain material. The coefficient being;

    a = (Final Length - Initial Length)/ (Initial length) * (ΔT)


    Is it possible to engineer a material to expand greater at lower temperature levels?
     
  2. jcsd
  3. In some circumstances it is possible. Invar alloys, for example, are engineered such that magnetostriction compensates thermal expansion over a temperature range near room temperature. This is a very special case (and apparently still not fully understood) that cannot be generalized to other materials.

    http://en.wikipedia.org/wiki/Invar

    Are you thinking about a special material and temperature range?
     
Know someone interested in this topic? Share a link to this question via email, Google+, Twitter, or Facebook

Have something to add?
Similar discussions for: Is there a method of lowering linear expansion of a material?
Loading...