CorroZoom
Accordions
In this time of relative isolation from friends and professional colleagues, CorroZoom seeks to build and maintain a worldwide community of scientists with mutual interests in the area of corrosion science. This webinar series will be free to everyone in the world. CorroZoom is not associated with any professional organization or society. An informal organizing committee has selected the speakers. Should it prove successful and the need continue, more speakers will be added.
Each webinar will only be synchronous, live only – you must be logged on to see it. The webinars will include a presentation of about 45 min in length and a discussion of about 15 min. Every participant will be able to submit questions for the speaker in the Zoom Q&A box, which will be handled by a moderator.
Accordions
On 1 December 2022, the CorroZoom webinar will start at these times worldwide:
| 0800 | Columbus (US Eastern) |
| 1000 | Sao Paulo |
| 1300 | London |
| 1400 | Paris |
| 1600 | Istanbul |
| 1630 | Tehran |
| 1830 | Mumbai |
| 2100 | Beijing |
| 2200 | Tokyo |
| 0000 | Melbourne (next day) |
Previous Webinars
Fifth CorroZoom Season 4 Webinar - En-Hou Han
7 May 2024 at 0800 US Eastern
Registration: https://osu.zoom.us/webinar/register/WN_qYTpKWMOTpCeNJ3eT_EhOA
Stress Corrosion Cracking of Stainless Steels and Nickel Base Alloys
En-Hou Han
Institute of Corrosion Science and Technology (ICoST)
South China University of Technology (SCUT)
Guangzhou, China
Abstract
Stress corrosion cracking (SCC) of different materials happens in various industries. Although SCC has long history and researchers have revealed considerable understanding, the mechanisms are not clear and accurate prediction of SCC is still not possible. Many factors affect SCC, including but not limited to alloy composition and microstructure, environment, and load (stress, strain and strain rate). This lecture will mainly discuss SCC crack initiation and propagation for Fe-Cr-Ni alloys, both stainless stainless steels and nickel-base alloys, and will especially focus on the effects of local parameters (local material, local chemical & electrochemical and local mechanical conditions). The electrochemical corrosion behavior and the chemical composition, microstructure and electronic characters of oxide films for stainless steels and Ni base alloys used in nuclear power plants will be reviewed. The effects of water chemistry and material microstructure on oxide films were analyzed in order to relate oxide film properties to electrochemical behavior. The effect of the surface after surface finishing, grinding, machining or scratching on corrosion and SCC initiation in simulated primary water of nuclear power plants will be discussed because the different manufacturing techniques can cause the formation of microstructures of different gradients near the surface and also cause large differences in surface deformation. SCC propagation in various conditions will be presented as will an SCC prediction model that has bee applied to real nuclear power industry components. Finally, future research trends on the topic will be proposed.
Biography
Dr. En-Hou Han is a full professor of South China University of Technology (SCUT), President of Institute of Corrosion Science and Technology (ICoST). He received his Ph.D. from Northeastern University in Shenyang, China in 1990. From 1995-1998 he was a research scientist at Massachusetts Institute of Technology (MIT) and was a professor at the Institute of Materials Research in Shenyang from 1998-2023. Prof. Han’s research interests include (1) Localized corrosion mechanism understanding and characterization, especially the interaction of mechanical and chemical effects, such as corrosion fatigue, stress corrosion cracking and hydrogen embrittlement for various materials in harsh environments; (2) Corrosion prevention techniques such as nanocomposite coatings, plating, inhibitors & cathodic protection; (3) Service lifetime prediction and failure analysis for engineering structure and components by big data modelling, digital twins & artificial intelligence (AI); (4) R & D of corrosion resistant alloys (including HEAs) in severe industry environment including new energy industries, energy storage and sea water. He received many awards and honors and has leadership roles in the corrosion and materials communities.
CorroZoom
CorroZoom is a free webinar series given by world renown experts in corrosion science. There have been three “seasons” of CorroZoom, one each year since 2021, with 6 webinars in each season. Details can be found in the pull down menu with Previous Webinars. They cover a wide range of topics in the field of corrosion science. Many of them have links to recordings of the webinars.
The list of speakers of CorroZoom Season 4 will be announced here when it is available and by email to people for whom we have email addresses. If you are not on the CorroZoom email distribution list but want to be added, please send an email to guo.237@osu.edu.
Thanks to everyone for making previous seasons of CorroZoom a huge success!
Following CorroZoom through watch parties with your research team? Send us (frankel.10@osu.edu) a photo from your watch parties, and we will share it on CorroZoom photo gallery!