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Fatigue performance improvement in AISI 4140 steel by dynamic strain aging and dynamic precipitation during warm laser shock peening

Warm laser shock peening (WLSP) is a thermomechanical treatment technique combining the advantages of laser shock peening and dynamic strain aging (DSA).

出版机构:Elsevier Science

刊物名称:Acta Materialia

出版时间:2011

ISSN:1359-6454

数据源:报刊文摘

Deformation behavior and the Portevin-Le Chatelier effect in a modified 18Cr–8Ni stainless steel

? W, V, Nb was added in the 18Cr?9Ni steel. ? Solute atmosphere of W, V, Nb formed around dislocations. ? Dynamic strain aging (DSA) was found to occur in the temperature range 530?680?C. ? DSA increases strength of the modified 18Cr?

出版机构:Elsevier Science

刊物名称:Materials Science and Engineering: A

出版时间:2011

ISSN:0921-5093

数据源:报刊文摘

Dynamic strain aging of a commercial Al–Mg–Si–Cu alloy during equal channel angular extrusion process

In this research, the occurrence of dynamic strain aging (DSA) phenomenon during equal channel angular extrusion (ECAE) of a commercial air cooled Al?Mg?Si?Cu alloy is investigated.

出版机构:Elsevier Science

刊物名称:Journal of Alloys and Compounds

出版时间:2010

ISSN:0925-8388

数据源:报刊文摘

Crossover from continuous to discontinuous propagation in the Portevin–Le Chatelier effect

The Portevin?Le Chatelier (PLC) effect in an Al?3.2%Mg alloy is investigated using velocity-driven tensile tests at room temperature, in a strain rate range where the crossover from continuous (type A bands) to discontinuous propagation (type B bands) occurs.

出版机构:Elsevier Science

刊物名称:Acta Materialia

出版时间:2010

ISSN:1359-6454

数据源:报刊文摘

Effect of temperature and hold time on internal hardening behavior of a near α titanium alloy under cyclic deformation

In the present work, the study of dynamic strain aging (DSA) in near ? titanium alloy Timetal 834 is reported in terms of internal hardening variables (kinematic and isotropic hardening variable). Total strain controlled low cycle fatigue tests have been conducted in air at 300?C and from 400?

出版机构:Elsevier Science

刊物名称:Materials and Design

出版时间:2010

ISSN:0261-3069

数据源:报刊文摘

Changes in mechanical characteristics during the strain-aging of wire rod made of steel Sv-08G2S

The Moldavian Metallurgical Plant has made a study of dynamic strain aging by subjecting specimens of wire rod made of steel Sv-08G2S to tension. Some of the steel had been microalloyed with boron, while another portion was made without this element.

出版机构:Springer US

刊物名称:Metallurgist

出版时间:2009

ISSN:0026-0894

数据源:报刊文摘

Thermo-viscoplastic constitutive relation for aluminium alloys, modeling of negative strain rate sensitivity and viscous drag effects

In this paper are presented two extensions of the Rusinek?Klepaczko constitutive relation [Rusinek A, Klepaczko JR. Shear testing of sheet steel at wide range of strain rates and a constitutive relation with strain-rate and temperature dependence of the flow stress. Int J Plasticity 2001;17:87?

出版机构:Elsevier Science

刊物名称:Materials and Design

出版时间:2009

ISSN:0261-3069

数据源:报刊文摘

On the mechanism of unstable plastic flow in an austenitic FeMnC TWIP steel

The complex character of plastic deformation of the austenitic steel Fe22Mn0.6C is studied at room temperature with the aid of high-frequency local extensometry.

出版机构:Elsevier Science

刊物名称:Materials Science and Engineering: A

出版时间:2009

ISSN:0921-5093

数据源:报刊文摘

Plastic instability of Al–Mg alloys during stress rate change test

Compared with the same test condition of both 5005 and 5052 alloys, the latter one shows more energy needed in the occurrence of plastic instability due to higher magnesium content.

出版机构:Elsevier Science

刊物名称:Materials Science and Engineering: A

出版时间:2009

ISSN:0921-5093

数据源:报刊文摘

Effect of oxygen and iron impurities on the hot deformation behavior of CP−Ti at intermediate temperatures

Deformation behavior of CP-Ti was studied at intermediate temperatures, ranging from 300 to 600 ?C, by compression testing at various strain rates, from 10?3/s to 10/s, using a Thermecmaster.

出版机构:The Korean Institute of Metals and Materials

刊物名称:Metals and Materials International

出版时间:2004

ISSN:1598-9623

数据源:报刊文摘