The Experts below are selected from a list of 88323 Experts worldwide ranked by ideXlab platform

Guo Jin - One of the best experts on this subject based on the ideXlab platform.

  • Fracture behavior of high-entropy alloy coating by in-situ TEM tensile testing
    Journal of Alloys and Compounds, 2017
    Co-Authors: Zhaobing Cai, Xiufang Cui, Erbao Liu, Meiling Dong, Guo Jin
    Abstract:

    Abstract The fracture behavior of high-profile high-entropy alloy coating was characterized by in-situ TEM tensile testing. The samples for in-situ TEM tensile testing were obtained by FIB technology. The results show that irrelevant to phase constitution, the Young's module, fracture strength and ultimate elongation are measured as ∼107 GPa, ∼2.70 GPa and ∼2.6%, respectively. Transcrystalline fracture and cleavage fracture with the cleavage plane of {112} are observed evidentially and the evolution of the dislocation motion in the material could be directly connected with the fracture behavior from the recorded movies obtained by a Gatan CCD camera. The Engineering Stress-strain curve is nearly linearity, however, a slight deviation away from linearity could be noted in the end of Engineering Stress-strain curve, which is attributed that the extra elastic deformation results in part of continued deformation.

Jun Lou - One of the best experts on this subject based on the ideXlab platform.

  • quantitative in situ tem tensile testing of an individual nickel nanowire
    Nanotechnology, 2011
    Co-Authors: Cheng Peng, Yogeeswaran Ganesan, Jian Yu Huang, Jun Lou
    Abstract:

    In this paper, we have demonstrated the usage of a novel micro-mechanical device (MMD) to perform quantitative in situ tensile tests on individual metallic nanowires inside a transmission electron microscope (TEM). Our preliminary experiment on a 360 nm diameter nickel nanowire showed that the sample fractured at an Engineering Stress of ~ 1.2 GPa and an Engineering strain of ~ 4%, which is consistent with earlier experiments performed inside a scanning electron microscope (SEM). With in situ high resolution TEM imaging and diffraction capabilities, this novel experimental set-up could provide unique opportunities to reveal the underlying deformation and damage mechanisms for metals at the nanoscale.

Jer-ren Yang - One of the best experts on this subject based on the ideXlab platform.

Zhaobing Cai - One of the best experts on this subject based on the ideXlab platform.

  • Fracture behavior of high-entropy alloy coating by in-situ TEM tensile testing
    Journal of Alloys and Compounds, 2017
    Co-Authors: Zhaobing Cai, Xiufang Cui, Erbao Liu, Meiling Dong, Guo Jin
    Abstract:

    Abstract The fracture behavior of high-profile high-entropy alloy coating was characterized by in-situ TEM tensile testing. The samples for in-situ TEM tensile testing were obtained by FIB technology. The results show that irrelevant to phase constitution, the Young's module, fracture strength and ultimate elongation are measured as ∼107 GPa, ∼2.70 GPa and ∼2.6%, respectively. Transcrystalline fracture and cleavage fracture with the cleavage plane of {112} are observed evidentially and the evolution of the dislocation motion in the material could be directly connected with the fracture behavior from the recorded movies obtained by a Gatan CCD camera. The Engineering Stress-strain curve is nearly linearity, however, a slight deviation away from linearity could be noted in the end of Engineering Stress-strain curve, which is attributed that the extra elastic deformation results in part of continued deformation.

Domagoj Lanc - One of the best experts on this subject based on the ideXlab platform.

  • AISI 316Ti (1.4571) steel—Mechanical, creep and fracture properties versus temperature
    Journal of Constructional Steel Research, 2011
    Co-Authors: Josip Brnic, Goran Turkalj, Marko Canadija, Domagoj Lanc
    Abstract:

    In this paper some useful, experimentally obtained, results regarding material properties of austenitic stainless steel 1.4571 are presented. Tests were performed at low and elevated temperatures. During uniaxial tests, mechanical properties such as ultimate tensile strength, 0.2% offset yield strength and short-time creep behaviour were determined. Charpy impact energy was also determined using the Charpy impact machine. Engineering Stress-strain diagrams are shown at low and elevated temperatures, whereas creep curves for selected Stress levels are presented at selected temperatures. Therefore, experimentally obtained data may be of importance for structure designers dealing with design of structures made of similar material and operating under similar environmental conditions.

  • aisi 316ti 1 4571 steel mechanical creep and fracture properties versus temperature
    Journal of Constructional Steel Research, 2011
    Co-Authors: Josip Brnic, Goran Turkalj, Marko Canadija, Domagoj Lanc
    Abstract:

    In this paper some useful, experimentally obtained, results regarding material properties of austenitic stainless steel 1.4571 are presented. Tests were performed at low and elevated temperatures. During uniaxial tests, mechanical properties such as ultimate tensile strength, 0.2% offset yield strength and short-time creep behaviour were determined. Charpy impact energy was also determined using the Charpy impact machine. Engineering Stress-strain diagrams are shown at low and elevated temperatures, whereas creep curves for selected Stress levels are presented at selected temperatures. Therefore, experimentally obtained data may be of importance for structure designers dealing with design of structures made of similar material and operating under similar environmental conditions.

  • 50crmo4 steel determination of mechanical properties at lowered and elevated temperatures creep behavior and fracture toughness calculation
    Journal of Engineering Materials and Technology-transactions of The Asme, 2010
    Co-Authors: Josip Brnic, Goran Turkalj, Marko Canadija, Domagoj Lanc
    Abstract:

    In this paper some interesting experimentally determined actualities referring to the 50CrMo4 steel are presented. In that way, the material mechanical properties are derived from uniaxial tensile tests at lowered and elevated temperatures. Engineering Stress versus strain diagrams for both of mentioned temperatures, curves representing the effect of temperature on specimen elongation and short-time creep curves are given. Notch impact energy test was also carried out. Taking into consideration service life of final product of the mentioned steel widely used in engine and machine technology, all of the mentioned data may be relevant during design and manufacturing procedure.

  • Structural Steel ASTM A709—Behavior at Uniaxial Tests Conducted at Lowered and Elevated Temperatures, Short-Time Creep Response, and Fracture Toughness Calculation
    Journal of Engineering Mechanics, 2010
    Co-Authors: Josip Brnić, Goran Turkalj, Marko Canadija, Domagoj Lanc
    Abstract:

    This paper presents the temperature dependence of the mechanical properties of structural high-strength low-alloy (HSLA) ASTM A709 Gr50 steel (En10025: S355 JO; DIN: ST 52-3U). Engineering Stress-strain diagrams at lowered and elevated temperatures are presented. Creep responses for selected constant Stresses at selected temperatures are also presented and are fit with a rheological model. Additionally, a relation between impact toughness and fracture toughness is proposed and is validated using results from notch impact tests on a Charpy pendulum impact machine.