In order to investigate the brittle-striation formation mechanism of low carbon steel JIS S10C in hydrogen gas environment, TEM/EBSD observations corresponding to fractography were conducted. Main results are as follows. (1) Quasi-cleavage (QC) facets plane with brittle striations does not coincides with (100) cleavage plane. (2) Slip deformation distributions reflecting the brittle striation formation processes are observed with TEM. One of the conceivable brittle-striation formation mechanisms which can explain these results is as follows. A striation line is formed during the loading part of the cycle as a trace of blunting by slip. Then, stable ductile crack growth starts. These processes were similar to those in the normal ductile fracture from a crack, that is, ductile tearing process in tension.
|Number of pages||8|
|Journal||Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A|
|Publication status||Published - Oct 2010|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering