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Steels, Microstructure and Properties
TLDR
In this article, the authors studied the effects of alloying elements in iron-carbon alloys and the formation of martensite, bainite reaction and acicular ferrite reaction.Abstract:
Iron and its interstitial solid solutions * The strengthening of iron and its alloys * The iron-carbon equilibrium diagram and plain carbon steels * The effects of alloying elements in iron-carbon alloys * Formation of martensite * The bainite reaction * Acicular ferrite * The heat treatment of steels - hardenability * The tempering of martensite * Commercial Steels: New material to include Nanostructured Steels, Steels for the Energy and Automobile Industries * The embrittlement and fracture of steels * Stainless steel * Weld microstructures * Modelling of microstructure and properties *read more
Citations
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Journal ArticleDOI
Welding metallurgy of martensitic advanced high strength steels during resistance spot welding
TL;DR: In this article, the microstructure and performance relationship in resistance spot welding of a martensitic advanced high strength steel was investigated and significant softening was observed in the heat affected zone (HAZ) due to allotriomorphic ferrite formation in the inter-critical HAZ and tempering of martensite in sub-critical HZ, with the latter plays more important role in mechanical properties of the spot welds.
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The Effects of Filler Metal Transformation Temperature on Residual Stresses in a High Strength Steel Weld
John Francis,Howard J. Stone,Saurabh Kundu,H. K. D. H. Bhadeshia,Ronald B. Rogge,Philip J. Withers,Leif Karlsson +6 more
TL;DR: In this paper, the extent to which the martensite-start temperature of the weld filler metal can be adjusted to engineer the residual stress distribution in a bainitic-martensitic steel weld was investigated.
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An automated method of quantifying ferrite microstructures using electron backscatter diffraction (EBSD) data
Sachin L. Shrestha,Andrew J. Breen,Patrick Trimby,Gwénaëlle Proust,Simon P. Ringer,Julie M. Cairney +5 more
TL;DR: A new automated identification and quantification technique for the characterisation of complex ferrite microstructures by electron backscatter diffraction (EBSD).
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Toughness and austenite stability of modified 9Cr–1Mo welds after tempering
R.K. Shiue,K.C Lan,C. Chen +2 more
TL;DR: In this paper, the influence of tempering treatments on toughness and austenite stability was conducted on modified 9Cr-1Mo welds, where the impact toughness of the welds increased rapidly at tempering temperatures above 680°C, and the associated fracture surface exhibited mainly dimple fractures for 750°C/1 h tempered welds.
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Challenges in hot-dip galvanizing of high strength dual phase steel: Surface selective oxidation and mechanical property degradation
Huachu Liu,Huachu Liu,Fang Li,Wen Shi,Srinivasan Swaminathan,Yanlin He,Michael Rohwerder,Lin Li +7 more
TL;DR: In this article, two challenges in hot-dip galvanizing of high strength dual phase steel such as surface selective oxidation and mechanical property degradation were discussed, and it was shown that the external selective oxidation occurred at low dew point − 30°C caused the full coverage of oxides, which is a problem for reactive wetting by molten zinc.