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논문 기본정보
Grain boundary sliding mechanism during high temperature deformation of AZ31 Magnesium alloy
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | Materials science engineering. properties, microstructure and processing. A, Structural materials |
| ISSN | 0921-5093, |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | Roodposhti, P.S.,Sarkar, A.,Murty, K.L.,Brody, H.,Scattergood, R. |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2016-01-01 |
| 초록 | High temperature tensile creep tests were conducted on AZ31 Magnesium alloy at low stress range of 1-13MPa to clarify the existence of grain boundary sliding (GBS) mechanism during creep deformation. Experimental data within the GBS regime shows the stress exponent is ~2 and the activation energy value is close to that for grain boundary diffusion. Analyses of the fracture surface of the sample revealed that the GBS provides many stress concentrated sites for diffusional cavities formation and leads to premature failure. Scanning electron microscopy images show the appearances of both ductile and brittle type fracture mechanism. X-ray diffraction line profile analysis (based on Williamson-Hall technique) shows a reduction in dislocation density due to dynamic recovery (DRV). A correlation between experimental data and Langdon's model for GBS was also demonstrated. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=NART75763220 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
|---|---|
| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | AZ31,Creep,Grain boundary sliding,Cavity formation |