Next Article in Journal
Development of Rapidly-Quenched Al-Ge-Si Filler Alloys for the Joining of Stainless Steel AISI 304 and Aluminum Alloy AA6082
Next Article in Special Issue
Crystal Orientation Dependence of the Portevin–Le Chatelier Effect in Instrumented Indentation: A Case Study in Twinning-Induced Plasticity Steels
Previous Article in Journal
Development of Ultrafine Grain IF Steel via Differential Speed Rolling Technique
 
 
Review

Recent Progress in Understanding the Nano/Micro-Mechanical Behavior of Austenite in Advanced High Strength Steels

by 1,2, 2,* and 1,2,3,*
1
Shenzhen Key Laboratory of Cross-Scale Manufacturing Mechanics, Southern University of Science and Technology, Shenzhen 518055, China
2
Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China
3
Institute for Manufacturing Innovation, Southern University of Science and Technology, Shenzhen 518055, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Roumen Petrov
Metals 2021, 11(12), 1927; https://doi.org/10.3390/met11121927
Received: 28 October 2021 / Revised: 25 November 2021 / Accepted: 26 November 2021 / Published: 29 November 2021
Advanced high strength steels (AHSS) are developed to reduce vehicle weight without sacrificing passenger safety. The newly developed AHSS frequently incorporates the austenite as the intrinsic component with large amount and good stability, which is realized by carefully designed alloying elements and thermo-mechanical processing. To explore the great potential of austenite in enhancing the strain hardening behavior of AHSS, detailed information on the mechanical behavior of single austenite grain is a prerequisite, which can be collected by a small-scale test. The present work reviews the recent progress in understanding the nano/micro-mechanical behavior of austenite in varied AHSS. Three different plasticity modes including dislocation plasticity, martensitic transformation, and deformation twinning can be observed in the austenite grains during small-scale tests, given proper stacking fault energy and crystal orientation. The remaining issues concerned with the nano/micro-mechanical behavior of austenite are discussed. The present review advances the general understanding of the nano/micro-mechanical behavior of austenite grains in AHSS, which may shed light on the precise austenite engineering with the development of new AHSS, realizing the dream of high-performance steels at low cost. View Full-Text
Keywords: mechanical behavior; martensite; dislocations; deformation twins; small-scale mechanical behavior; martensite; dislocations; deformation twins; small-scale
Show Figures

Figure 1

MDPI and ACS Style

Guan, Q.; Lu, W.; He, B. Recent Progress in Understanding the Nano/Micro-Mechanical Behavior of Austenite in Advanced High Strength Steels. Metals 2021, 11, 1927. https://doi.org/10.3390/met11121927

AMA Style

Guan Q, Lu W, He B. Recent Progress in Understanding the Nano/Micro-Mechanical Behavior of Austenite in Advanced High Strength Steels. Metals. 2021; 11(12):1927. https://doi.org/10.3390/met11121927

Chicago/Turabian Style

Guan, Qingwen, Wenjun Lu, and Binbin He. 2021. "Recent Progress in Understanding the Nano/Micro-Mechanical Behavior of Austenite in Advanced High Strength Steels" Metals 11, no. 12: 1927. https://doi.org/10.3390/met11121927

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop