automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

TRIP Steels

H. K. D. H. Bhadeshia

TRIPstands for transformation-induced plasticity.

cracks
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy






invariant-plane strain

Strong TRIP-Assisted Steels

invariant-plane strain

Computer Programs for TRIP-Assisted Steels

MAP_STEEL_TRIP_AUSTENITE PROGRAM:To predict the retained austenite content and austenite carbon concentration in TRIP-assisted steels.
MAP_STEEL_FLANGEABILITY PROGRAM:To predict the hole expansion ratio of steel as a function of tensile test parameters.



Creating new automotive steels

Scripta Materialia 65 (2011) 604



Silicon-rich TRIP-Assisted Steels and Fayalite Fe 2SiO 4

The relatively large silicon concentration in many TRIP-assisted steels causes the formation of hard, adherent oxides making it difficult to implement surface cleaning prior to hot-rolling. This results in a poor surface finish. The stronger adhesion comes from that fact that the silicon undergoes a eutectic reaction between FeO and Fayalite (Fe 2SiO 4). This reaction occurs at typical hot-rolling temperatures and leads to the penetration of the eutectic into the steel, thereby anchoring the oxide. Residual FeO left on the surface of the eutectic then changes into Fe 2O 3which is the red oxide that gets rolled into the surface, producing an ugly finish on the steel.

details
Fayalite_1
Crystal structure of Fayalite
Fayalite_3
Crystal structure of Fayalite
Fayalite_4
Crystal structure of Fayalite
Fayalite_2
Crystal structure of Fayalite
Fayalite_5
Crystal structure of Fayalite



TRIP-assisted Steel in Cars

DSCN0965.JPG
Crash-reinforcement bar in the door panel
DSCN0966.JPG
Crash-reinforcement bar in the door panel
DSCN0967.JPG
DSCN0968.JPG
Crash-reinforcement bar in the door panel
DSCN0969.JPG
Crash-reinforcement bar in the door panel
DSCN0970.JPG
Crash-reinforcement bar in the door panel and the strong-steel pillar
DSCN0971.JPG
Crash-reinforcement bar in the door panel
DSCN0972.JPG
"Body in white"
DSCN0973.JPG
Crash-reinforcement bar in the door panel
DSCN0974.JPG
DSCN0963.JPG
"Body in white"
DSCN0963.JPG
"Body in white"

Body in Black

automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

The body-in-black
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

Component made using laser welded tailored blanks
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy Stainless steel exhaust

automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy Tailored blanks are made from a variety of steels in order to exploit specific properties at different locations on the compnent

TWIP and Dual Phase Steels

Sheep and TRIP Steel

Cars

Taiwan, China Steel

automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

Hydroformed components for cars
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

Hydroformed components for cars
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

Hydroformed components for cars
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

The side-impact resistance steel bar for car doors
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

The side-impact resistance steel bar for car doors
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

Components for a car door
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy

Components for a car door
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy


automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy
automotive steel, TRIP steel, TRIP, transformation induced plasticity,retained austenite, steel, metallurgy
Bearing steels Titanium Bainite Martensite Widmanstätten ferrite
Cast iron Welding Allotriomorphic ferrite Movies Slides
Neural Networks Creep Stainless Steels Theses

PT Group Home Materials Algorithms