The Effect of Strain Rate on Abnormal Grain Growth of P/M Nickel-base Superalloy
Fang Shuang, Dong Yunpeng, Wang Shuyun
Available Online August 2015.
- https://doi.org/10.2991/cas-15.2015.48How to use a DOI?
- ni-base superalloy; strain rate; abnormal grain growth; EBSD.
- The samples with a length of 50mm and cross section area of 20mm2 were machined from extruded P/M Nickel-base superalloy billet and the isothermal deformation tests were carried out at constant strain rate in a vacuum environment using the Thermecmastor. All the samples were deformed to a true strain of 1.04 at deformation temperature 1070 and strain rate 0.001s-1~0.1s-1 respectively. The result is the deformation strain rate determine the position and domain of AGG. The aggregation of small grain boundary of all points has certain evolution for different strain rate and the AGG regions of all samples has relative higher grain boundary energy. The high percentage of low energy and low percentage of high migration of CSL boundaries may lead to AGG. The gradient and fluctuation of CSL boundaries in micro region may be comtribut the AGG.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Fang Shuang AU - Dong Yunpeng AU - Wang Shuyun PY - 2015/08 DA - 2015/08 TI - The Effect of Strain Rate on Abnormal Grain Growth of P/M Nickel-base Superalloy PB - Atlantis Press SP - 201 EP - 204 SN - 2352-538X UR - https://doi.org/10.2991/cas-15.2015.48 DO - https://doi.org/10.2991/cas-15.2015.48 ID - Shuang2015/08 ER -