The effects of strain-ageing due to interstitial solutes on the mechanical properties of metals

1971 ◽  
Vol 16 (1) ◽  
pp. 1-18 ◽  
Author(s):  
J. D. Baird
Keyword(s):  
Mechanical Properties ◽  
Strain Ageing

Influence of ageing treatment on microstructure, mechanical properties and adhesive wear behaviour of 6063 aluminium alloy

2014 ◽  
Vol 66 (4) ◽  
pp. 520-524 ◽  
Author(s):  
Serkan Büyükdoğan ◽  
Süleyman Gündüz ◽  
Mustafa Türkmen
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
High Speed ◽  
Al Alloys ◽  
Wear Behaviour ◽  
Al Alloy ◽  
Strain Ageing ◽  
Content Type ◽  
Static Strain ◽  
Structural Applications

Purpose – The paper aims to provide new observations about static strain ageing in aluminium (Al) alloys which are widely used in structural applications. Design/methodology/approach – The present work aims to provide theoretical and practical information to industries or researchers who may be interested in the effect of static strain ageing on mechanical properties of Al alloys. The data are sorted into the following sections: introduction, materials and experimental procedure, results and discussion and conclusions. Findings – Tensile strength, proof strength (0.2 per cent) and percentage elongation measurement were used to investigate the effect of strain ageing on the mechanical properties. Wear tests were performed by sliding the pin specimens, which were prepared from as-received, solution heat-treated, deformed and undeformed specimens after ageing, on high-speed tool steel (64 HRC). It is concluded that the variations in ageing time improved the strength and wear resistance of the 6063 Al alloy; however, a plastically deformed solution-treated alloy has higher strength and wear resistance than undeformed specimens for different ageing times at 180°C. Practical implications – A very useful source of information for industries using or planning to produce Al alloys. Originality/value – This paper fulfils an identified resource need and offers practical help to the industries.

Bruce Alexander Bilby. 3 September 1922 — 20 November 2013

2014 ◽  
Vol 60 ◽  
pp. 57-73
Author(s):  
G. W. Greenwood
Keyword(s):  
Mechanical Properties ◽  
Martensitic Transformations ◽  
Crystal Defects ◽  
Atomic Scale ◽  
Emeritus Professor ◽  
Strain Ageing ◽  
Safety Assurance ◽  
Large Structures ◽  
Pure Mathematics

Emeritus Professor Bruce Bilby, who died in November 2013 at the age of 91 years, was among the few pioneers who made great contributions to the understanding of crystal defects, notably of dislocations, in providing precise geometrical descriptions of their form, arrangement, interaction and movement. This has led to a clear and experimentally verifiable interpretation of phenomena that include the occurrence of yield points, strain ageing, mechanisms of twinning and martensitic transformations, and the characteristics of atomic separation that lead to fracture. Bruce’s approach often made use of areas of pure mathematics, whose relevance had not previously been suspected, in elegant descriptions of defected crystal structures. Much of his work is related to the role of defects in metals and alloys in their influence on mechanical properties. It assists in considerations of safety assurance of large structures. It links macroscopic behaviour with phenomena on an atomic scale and has underpinned technological judgements.

Effect of strain ageing on the mechanical properties of partially damaged structural mild steel

2015 ◽  
Vol 77 ◽  
pp. 83-93 ◽  
Author(s):  
Sajjad Hosseini ◽  
Amin Heidarpour ◽  
Frank Collins ◽  
Christopher R. Hutchinson
Keyword(s):  
Mechanical Properties ◽  
Mild Steel ◽  
Strain Ageing

Effect of Ageing Process on Properties of Tube Steel under Conditions of Tyumen Region

2017 ◽  
Vol 736 ◽  
pp. 40-45
Author(s):  
I.L. Polyanskaya ◽  
L.V. Belova
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Temperature Fluctuations ◽  
Tube Steel ◽  
Strain Ageing ◽  
Steel Temperature ◽  
Accelerate Ageing ◽  
Strength Tests ◽  
Ageing Processes ◽  
Microstructure Effect

The paper presents the results of study on artificial strain ageing of tube steel. Temperature fluctuations accelerate ageing processes in steel resulting in changes of its microstructure. Effect of strain ageing on mechanical properties of steel has been assessed during impact strength tests.

Effect of Inter-Pass Ageing during Cold Rolling on Magnetic Properties of Fe-3%Si

2013 ◽  
Vol 753 ◽  
pp. 522-525
Author(s):  
Dirceni Souza Costa Amorim ◽  
Marco Antônio Cunha ◽  
Dogoberto Brandão Santos ◽  
João Henrique Brandão ◽  
Berenice Mendonça Gonzalez
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Magnetic Properties ◽  
Yield Strength ◽  
Cold Rolling ◽  
Electrical Steel ◽  
Core Loss ◽  
Primary Recrystallization ◽  
High Permeability ◽  
Strain Ageing

The effects of inter-pass ageing temperature during cold rolling on structure, magnetic properties and mechanical properties of high permeability grain oriented electrical steel was studied. The samples were processed in a single-stage cold rolling to 0.27 mm thickness, with 88 % reduction, without and with inter-pass ageing treatment in order to determine the magnetic properties. To determine the changes in mechanical properties due to strain ageing, the samples underwent overlapped ageing, after pre-strain by rolling, under the same conditions of inter-pass ageing and then were subjected to tensile test. The effect of strain ageing was more pronounced in the thickness of 0.7 mm and the largest variation in yield strength was at 200°C in all evaluated thicknesses. At this temperature the largest amount of {110} orientation after primary recrystallization was also observed, as well as the lowest final grain size and consequently the best results of core loss. The magnetic induction had almost no alterations.

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