Functional Features of Hard Tension/Compression Tester Developed for High Temperature Microscope and its Metallurgical Applications

DOI Web Site Web Site

Bibliographic Information

Other Title
  • 高温顕微鏡用引張・圧縮試験機の特性と冶金学的応用
  • コウオン ケンビキョウヨウ ヒッパリ アッシュク シケンキ ノ トクセイ ト

Search this article

Abstract

A hard tension/compression tester has been constructed in the specimen holder of a high temperature microscope, without any interference with the functional features of the microscope including the side-entry goniostage. A noticeable advantage of the microscope was the in-situ observation of metallurgical phenomena at every stage of the load-elongation curves at high temperatures. The specific features are as follows:<BR>(1) The standard specimen for tension/compression test is 5 mm in gauge length, 2 mm in width and 0.5∼1 mm in thickness.<BR>(2) The maximum load is 100 kg.<BR>(3) The maximum stroke is 5 mm.<BR>(4) The cross head displacement speed is kept at the given value in six steps such as 0.025,0.020,0.015,0.010,0.005 and 0.0025 mm/s during elongation of specimens, independently of changing load.<BR>(5) The spring constant of the tester is estimated larger than 700 kg/mm or 7×106 N/m<BR>This tester was successfully applied to observing and recoding metallugical phenomena such as formation of the strain-induced martensite at 250°C in Fe-22%Ni alloy and the giant slip bands at 450°C during the serrated elongation of Cu-10 at%Al single crystal.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top