ProgramMaster Logo
Conference Tools for MS&T21: Materials Science & Technology
Register as a New User
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting MS&T21: Materials Science & Technology
Symposium Advances in Ferrous Metallurgy
Presentation Title Hole Expansion Performance of Three High Strength Steels: Observation of Room Temperature Strain Ageing Phenomena
Author(s) Rachael Stewart, Mike J. Settle
On-Site Speaker (Planned) Mike J. Settle
Abstract Scope A delay between hole punching and expanding had a measured negative impact on the hole expansion performance (HER) of certain steels. A HSLA590GA, a Complex Phase780GI and a Dual Phase780GI steel were tested after delay times between 1 hour and 10 days. The HER of punched holes in all three steels decreased with delay time. Over the ten day study, the rate of decay followed a logarithmic trend in all three steels. The relative loss of performance after 10 days was similar across all three steels, although the measured HER was different in each. The 24-hour loss in HER was avoided by storage in freezer, and machined holes did not lose performance with time. The time and temperature dependence of the phenomena suggest a diffusion mechanism. Hydrogen diffusion was ruled out by testing hydrogen charged samples. It is therefore theorized that a room temperature ageing phenomena at the sheared edge caused the observed decrease in HER.


3D Non-destructive Characterization of Texture Evolution in Electrical Steels with Lab-based Diffraction Contrast Tomography
Cost Modeling and Life Cycle Analysis of Low-Emissions Iron Production
Development of Fine Grained Steel for Cold Heading Application
Effect of Alloying Content on Fractional Softening Behavior and Microstructural Evolution During Double-twist Torsion Testing of Microalloyed Steels
Effect of CO2 Injection into Blast Furnace Tuyeres on Smelting Parameters
Evaluation of Different Austenitization Sub-Models for 22MnB5 Steel Using Bayesian Model Selection Technique
High Strength Low Alloy Steels strengthened by Heusler precipitates
Hole Expansion Performance of Three High Strength Steels: Observation of Room Temperature Strain Ageing Phenomena
Impact of Alloy Composition on the Hot Ductility of Steel during Continuous Casting
New Roll Alloys Concepts Using in Finishing Stands of Rebar Rolling
Radiative Properties of Al-Si Coated 22MnB5 Steel
Reducing the Effects of Texture on Phase Fraction Measurement of Retained Austenite Using X-ray Diffraction
Research on the Phosphate Capacity of CaO-FeO-MgO-SiO2-MnO-TiO2-V2O5-P2O5 Slags
Structure Optimizations of Submerged Entry Nozzle in a Steel Slab Continuous Casting Mold
Studying Processing – Microstructure – Mechanical Property Correlation in a Multi-phase Advanced High Strength Steel
The Effect of Energy-power Parameters of Hot Rolling on Structure and Properties of Low Alloyed Steels
The Study and Optimization of Calcium Flux for Self-fluxed Pellets
Thermodynamics and Kinetics of Coke Breeze Combustion Under Different Oxygen Content in Sintering Process

Questions about ProgramMaster? Contact