@article{oai:repo.lib.tut.ac.jp:00001212, author = {大野, 信忠 and 村上, 澄男 and 服部, 満 and 武藤, 康 and OHNO, Nobutada and MURAKAMI, Sumio and HATTORI, Mitsuru and MUTOH, Yasushi}, issue = {491}, journal = {日本機械学會論文集. A編, Transactions of the Japan Society of Mechanical Engineers. A}, month = {Jul}, note = {Creep of Hastelloy XR in steady and nonsteady multiaxial stress states was investigated experimentally by use of thin-walled tubular specimens at 900℃ in air. The following stress conditions were applied to the specimens; (I) four kinds of combined constant tension-torsion, and (II) three kinds of constant tension superposed to cyclically reversed torsion. It was observed that, while only secondary creep prevails under steady stress conditions because of the very high test temperature, cyclically reversed torsion induces marked increase of creep strain rate (i.e., cyclic softening). However, this cyclic softening phenomenon was found to become less noticeable with increase of superposed constant tension. Moreover, the validity of Mises' flow rule was ascertained except just after nonproportional changes of stress state., ・rights:日本機械学会 ・rights:本文データは学協会の許諾に基づきCiNiiから複製したものである ・relation:isVersionOf:http://ci.nii.ac.jp/naid/110002377321/}, pages = {1191--1196}, title = {ハステロイXRの900℃での定常および非定常多軸応力クリープ}, volume = {53}, year = {1987} }