Next Article in Journal
The 2D Finite Element Microstructure Evaluation of V-Shaped Arc Welding of AISI 1045 Steel
Next Article in Special Issue
Effect of Low-Temperature Sensitization on Hydrogen Embrittlement of 301 Stainless Steel
Previous Article in Journal
Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review
Previous Article in Special Issue
Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Metals 2017, 7(2), 40;

The Effects of Cr and Al Addition on Transformation and Properties in Low‐Carbon Bainitic Steels

The State Key Laboratory of Refractories and Metallurgy, Hubei Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, 947 Heping Avenue, Qingshan District, Wuhan 430081, China
Author to whom correspondence should be addressed.
Received: 23 December 2016 / Accepted: 27 January 2017 / Published: 31 January 2017
(This article belongs to the Special Issue Alloy Steels)
View Full-Text   |   Download PDF [10119 KB, uploaded 13 February 2017]   |  


Three low‐carbon bainitic steels were designed to investigate the effects of Cr and Al addition on bainitic transformation, microstructures, and properties by metallographic method and dilatometry. The results show that compared with the base steel without Cr and Al addition, only Cr addition is effective for improving the strength of low‐carbon bainitic steel by increasing the amount of bainite. However, compared with the base steel, combined addition of Cr and Al has no significant effect on bainitic transformation and properties. In Cr‐bearing steel, Al addition accelerates initial bainitic transformation, but meanwhile reduces the final amount of bainitic transformation due to the formation of a high‐temperature transformation product such as ferrite. Consequently, the composite strengthening effect of Cr and Al addition is not effective compared with individual addition of Cr in low‐carbon bainitic steels. Therefore, in contrast to high‐carbon steels, bainitic transformation in Cr‐bearing low‐carbon bainitic steels can be finished in a short time, and Al should not be added because Al addition would result in lower mechanical properties. View Full-Text
Keywords: bainitic transformation; microstructure; property; Cr; Al bainitic transformation; microstructure; property; Cr; Al

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Tian, J.; Xu, G.; Zhou, M.; Hu, H.; Wan, X. The Effects of Cr and Al Addition on Transformation and Properties in Low‐Carbon Bainitic Steels. Metals 2017, 7, 40.

Show more citation formats Show less citations formats

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

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top