http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Ashim Bikash Mandal (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Influence of Ageing on the Intergranular Corrosion of an Al–Mg–Si Alloy
Aluru Praveen Sekhar,Arijit Samaddar,Ashim Bikash Mandal,Debdulal Das 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.12
This report investigates the influence of ageing on the susceptibility to intergranular corrosion (IGC) of an Al–Mg–Si alloy. The selected AA6063 Al-alloy has been exposed to ageing treatments at a predetermine temperature of 423 K for durationsof 1 to 168 h to achieve the wide range of ageing states covering under- to peak- to over-aged. The ageing behaviour of theselected alloy has been determined based on the results of hardness and tensile properties. The susceptibility to IGC has beenevaluated following the British standard (BS ISO-11846) method B and assessed based on the average and maximum corrosiondepths apart from in-depth surface and sub-surface characterizations of corroded specimens. It has been observed thatthe depths of corrosion increase monotonically with increase in ageing time. With progress of artificial ageing, the dominantmode of corrosion gradually changes in the order of minor pitting, moderate pitting, pitting plus localized IGC, localizedIGC and uniform IGC. The phenomenon of preferential dissolution of Mg from the β″ (Mg5Si6) and β (Mg2Si) precipitatesas well as the existence of Fe-rich intermetallic particles at the grain boundaries cause the pitting and intergranular corrosionbecause of the formation of local galvanic cells between the lower corrosion potential of Mg-depleted precipitates orprecipitate free zones and to the adjacent anodic grain boundary precipitates.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
