Sixth International Workshop on Environmentally-Assisted Cracking

An ECI Conference Series

July 16-21, 2023
Washington, DC area, USA

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About this Conference

Environmentally-assisted cracking (EAC) of engineering materials has been studied in depth for more than 50 years. The major reason why EAC occasionally occurs is due to a lack of understanding of the initiation process. Propagation of EAC for engineering alloys when exposed to specific environments is well known, but unanticipated failures still happen and managing structures to mitigate EAC risk is difficult and may involve significant cost and time. Subjects deserving of continued consideration are the mechanisms, processes, and interactions between chemical, mechanical, and metallurgical factors that account for EAC initiation and the many manifestations of EAC that occur in service environments. Improved mechanistic understanding is fundamental to the development of EAC resistant alloys, and identification of strategies for the prediction and mitigation of EAC failures in engineering systems.  

While significant progress in our understanding of EAC propagation has been achieved, important fundamental questions remain unanswered about the localized environment, mechanical response, and microstructural features associated with initiation processes.  These initiation processes often involving a transition from localized corrosion to small and short cracks and in some instances the phenomenon of crack arrest. This workshop will focus attention on the initiation stage of EAC, an aspect of EAC that is benefitting from recent advancements in experimental methods, analytical techniques, modelling, and computational capabilities.  Contributions are solicited on all aspects of EAC initiation, including in situ, real time experimental characterization using novel testing techniques, the role of localized chemistry, reaction processes, microstructure, and damage morphology, along with the significance of plasticity and dynamic mechanical and environmental conditions.

The meeting objective is to assemble a group of “skilled in the field” researchers in metallurgy, fracture, electrochemistry, and corrosion to participate in a workshop that will clarify our current state of knowledge, identify knowledge gaps, and detail investigative techniques to advance our understanding of EAC initiation mechanisms.

The emphasis of the workshop will be on:

  • Theoretical and experimental studies of crack initiation under static and dynamic loading that explore unifying principles and the interaction of material properties, microstructure, electrochemical processes, plasticity, and fracture
  • Mechanistic modelling of the development of corrosion damage and the nucleation and propagation of small and short cracks
  • The role of specific properties, alloy microstructure, environmental conditions, and processes that produce embryonic features that transform into cracks capable of propagating.  These conditions and processes may include time varying environment, electrochemical reactions, and plasticity under static/cyclic stress
  • New techniques for measuring crack initiation in aqueous (immersion or atmospheric) and gaseous environments, including crack tip microscopy, chemistry, and in situ crack growth and electrochemical measurements
  • Emphasis is on understanding EAC and the application of advanced measurement methods for quantifying the early stages of EAC, rather than reporting comparative performance data for material selection
  • All topics are to be at ambient climatic temperatures, no high temperature work will be accepted

Scope

The symposium scope includes the fundamental understanding of EAC from the development of conditions that cause EAC initiation, evolution of corrosion damage, and the initiation of small cracks that may propagate.  Emphasis will be on the modelling and experimental studies that provide mechanistic insight into factors and interactions that cause EAC.  Unifying principles governing the time and stress dependent crack initiation phenomena are of interest. 

Papers that are related to conventional alloy characterization and materials selection without a direct link to EAC initiation  are discouraged.

Technical Topics

  • Dependence of defect evolution and crack nucleation on alloy microstructure in aqueous electrolyte and gaseous environments.
  • Role of static and dynamic loading in initiating cracks from a microstructural feature and localized corrosion damage.
  • Transition from microstructural defect and corrosion damage to propagating crack under static and fatigue loads in inert and or aggressive environments.
  • Role of anodic dissolution and hydrogen on defect evolution and crack nucleation and propagation.
  • High resolution evaluation (ideally 4D) of local crack tip conditions: mechanical driving-forces, alloy microstructure, and environmental conditions.
  • Modelling of the governing EAC mechanisms – atomistic & continuum
  • The convergence of simulation and modelling with modern analytical tools, alloy development, and structural design.
  • The adequacy of existing standard EAC test methods to predict the service performance of current materials, next generation alloys, and additive manufactured parts.

Conference Organization

A.K. Vasudevan, Office of Naval Research (retired)
Ronald Latanision, Exponent, Inc.
Henry Holroyd, Luxfer (retired)
Fritz Friedersdorf, Luna Labs USA, LLC

Abstract Submission

One-page abstracts that include specific results and conclusions to allow a scientific assessment of a proposed oral presentation or poster are invited.

Oral and poster abstract deadline: February 1, 2023

Abstracts should be submitted electronically.

The abstract template available at the above link must be followed for an abstract to be considered for presentation.

Venue Information

The conference will take place at the Sheraton Reston Hotel in Reston, Virginia. The hotel has just completed a complete renovation and is located just two miles from Reston Town Center and a 30-minute drive (40-minute subway trip) from downtown Washington, D.C. 

The Sheraton Reston has 20,000 square feet of refreshed, modern event space for conferences and a new courtyard for social gatherings. All guest rooms have been and remodeled with larger bathrooms with stand-up showers, new Sheraton Signature Beds, 55” smart TV’s and refrigerators. Additional amenities include a new, state of the art 1,800 square foot gym, Media Room and Studio by Sheraton, Club Lounge and a renovated BarBar outlet which offers a coffee shop in the morning, lunch offerings and bar in the evening.

Reston Town Center has a number of dining, shopping and entertainment options. The hotel is only nine miles from the famous Smithsonian Steven F. Udvar-Hazy Center National Air and Space Museum, and is adjacent to the Reston National Golf Course.

The hotel is close to all the attractions in Washington, D.C. Please visit the links below for detailed information:

Official Tourism Site of Washington, DC

Smithsonian Museums

Old Town Trolley Tours

Washington Neighborhoods Dining Guide

Transportation

The hotel is an 11-minute drive (about 7 miles) from Washington Dulles International Airport (IAD). Estimated taxi fare from Dulles is about $25.

Ronald Reagan Washington National Airport (DCA) is 24 miles away, about a 30-minute drive. A taxi costs about $65.The subway journey time between Reston and Washington, D.C.  takes about 40 minutes. Operated by Metro Washington DC, the Reston to Washington subway service departs from WIEHLE-RESTON EAST station and arrives in FARRAGUT WEST station. The fare is $3.85.

General Information on ECI

Engineering Conferences International (ECI) is a not-for-profit, global engineering conferences program, originally established in 1962 that provides opportunities for the exploration of problems and issues of concern to engineers and scientists from many disciplines.

The format of the conference provides morning and late afternoon or evening sessions in which major presentations are made. Poster sessions will be scheduled for evening discussion as well. Available time is included during the afternoons for ad hoc meetings, informal discussions, and/or recreation. This format is designed to enhance rapport among participants and promote dialogue on the development of the meeting. We believe the conferences have been instrumental in generating ideas and disseminating information to a greater extent than is possible through more conventional forums.

All participants are expected both to attend the entire conference and to contribute actively to the discussions. The recording/photographing of lectures and presentations is forbidden. As ECI conferences take place in an informal atmosphere, casual clothing is the usual attire.

Smoking is prohibited at ECI conferences and conference functions.

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