Affiliation:
1. Hefei , Anhui , P. R. China
Abstract
Abstract
A large number of strip-like structures were found distributed along the axial direction of inconel 783 alloy bolts. Large-sized Nb were concentrated and precipitated in the interior, which makes the material structure uneven, resulting in a reduction of toughness and plasticity. Adopting a heat treatment method for increasing the solution temperature and at the same time prolonging the aging time improved the material properties to a certain extent. The results show that the large Nb easily develops inclusions, which reduces the impact properties of the material. After heat treatment, the strip-like structures disappeared, the size of the Nb decreased and nano-scale carbides were precipitated out, thus increasing plasticity by 11.5 %, toughness by nearly two times and improving the comprehensive mechanical properties in general.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
5 articles.
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