The crack path of 12Cr martennltlc stainless steel tempered at low temperature is intergranular in the case of delayed failure and transgranular in the case of corrosion fatigue. The effect of varying load on the transition of crack path In delayed failure was examined. Delayed failure tent was done in pure water under triangularly varying load. The crack path was dependent on load frequency. Higher frequency resulted in transgranular crack and lower frequency resulted in intergranular crack. There was a threshold frequency below which intergranular crack could appear. An insertion of a few cycles of rapid loading into the low frequency loading which usually resulted in intergranular crack caused the transition into a transgranular crack.
|Number of pages||7|
|Journal||Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A|
|Publication status||Published - Sep 2008|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering