Enhanced Stretch Formability of Magnesium Alloy Sheet by Prestretching at Various Speeds at Higher Temperature

JOM - Prestretch deformation of 6.48% with various initial speeds (1 mm/min, 101 mm/min, and 100 mm/min) was carried out at 723 K to improve the formability of...     

Life and FCT Failure of Yttria- and Ceria-Stabilized EBPVD TBC Systems on Ni-Base Substrates

Oxidation of Metals - The lifetime at 1100 °C of furnace oxidation tested TBC samples having YSZ (ZrO2-7 wt.% Y2O3) and CeSZ (ZrO2-25 wt.% CeO2-2.5 wt.%...     

Microstructure and Mechanical Properties of Ultrasound-Assisted Soldered Al-50 wt.%Si/Al-27 wt.%Si Joints for Automotive Applications

JOM - Hypereutectic Al-27 wt.%Si alloy and hypereutectic Al-50 wt.%Si alloy have been soldered using a Zn-5 wt.%Al interlayer without flux at 420°C in air with...     

Oxidation Behavior of Oxide Dispersion-Strengthened W–Ni Alloys

Oxidation of Metals - Oxidation behavior (at 1000 °C for 10 h) of 1.0 wt% oxide dispersion-strengthened (nano-Y2O3, Al2O3, La2O3 dispersed) mechanically alloyed...     

Microstructure and Low-Temperature Mechanical Properties of 304 Stainless Steel Joints by PAW + GTAW Combined Welding

Journal of Materials Engineering and Performance - The combined double-pass process of plasma arc welding (PAW) + gas tungsten arc welding (GTAW) was performed on 304 austenitic...     

High-Temperature Corrosion of HVAF-Sprayed Ni-Based Coatings for Boiler Applications

Oxidation of Metals - The present study investigates the initial corrosion behaviour of HVAF-sprayed NiCr, NiAl and NiCrAlY coatings in two different environments, O2 + H2O and...     

Effect of Exposure Temperature on Oxidation of Austenitic Steel HR3C in Supercritical Water

Oxidation of Metals - Oxidation tests of the austenitic steel HR3C were conducted at 600–700 °C in supercritical water under 25 MPa. The characteristics of oxide scales...     

The Effect of Ti on the Early Stages of Oxidation of an Alumina-Forming NiCrAl Alloy

Oxidation of Metals - Model γ-NiCrAl alloys with and without titanium were oxidized for short times up to 32 h at 1000 °C and subsequently characterized by scanning...     

A Comparative Study on the Effect of Four-Source Ultrasonic Power on the Microstructure and Mechanical Properties of Large-Scale 2219 Aluminum Ingots

JOM - High-intensity ultrasound was introduced into the direct chill casting of large-scale 2219 aluminum alloy ingots (1380 mm in diameter and 4600 mm in length). The effects of...     

Effect of PostNitride Annealing on Wear and Corrosion Behavior of Titanium Alloy Ti-6Al-4V

Journal of Materials Engineering and Performance - Titanium alloy, Ti-6Al-4V, was plasma nitrided using RF plasma with 100% N at 800 °C and annealed at 850 °C in vacuum....     

Growth and Exfoliation Behavior of the Oxide Scale on 316L and T91 in Flowing Liquid Lead–Bismuth Eutectic at 480 °C

Oxidation of Metals - Corrosion tests of the 316L and T91 steels were performed in flowing lead–bismuth eutectic (LBE) with a flowing velocity of 0.3 m/s at 480 °C up...     

Textures in cold-rolled and annealed Ti50Ni50 shape memory alloy

In the 50% cold-rolled and 600 °C annealed Ti₅₀Ni₅₀ alloy, this study observes (1 1 0)[1 1̄ 0]_P α-fiber II in RD as the main texture in the B2 phase by ODF test. Cyclic tensile tests and DMA results indicate that (1 1 1̄)[1 1̄ 1]_M is the main texture in B19^′ martensite.     

Paralinear Oxidation of Cr-Si-C-Coated C/SiC at 1300°C in Wet and Dry Air Environments

JOM - The oxidation kinetics of a Cr3Si-Cr7C3/SiC/SiC-coated C/SiC were comparatively investigated in dry and wet air at 1300°C under 1 atm. After oxidation for 10 h, Cr2O3...     

Oxidation of 60Si2MnA Steel in Atmospheres Containing Different Levels of Oxygen,Water Vapour and Carbon Dioxide at 700–1000 °C

Oxidation of Metals - The oxidation behaviour of the spring steel 60Si2MnA in atmospheres containing 0–21% (volume per cent) O2,?<?20 ppm (part per million) to...     

提高挤压铝材产量措施

先进的装备、高素质的劳动者、现代化的科学管理对提高挤压产品产量与质量起着至关重要的作用。先进的挤压生产线都装有ＣＡＤＥＸ、ＰＩＣＯＳ、ＭＩＤＩＳ、Ｏｐｔａｌｅｘ 等控制系统，文中提出了提高产量、质量的具体措施。     

Influence of Direct Quenching on Microstructure and Mechanical Properties of Steel Plate for Large Oil Storage Tanks

The influence of direct quenching on microstructure and mechanical properties of high performance steel plates for large oil storage tanks was studied. The direct quenched and tempered (DQ&T) steel plates were rolled at different finish rolling temperatures (1113 and 1173 K), and their microstructures and mechanical properties were compared with those of reheat quenched and tempered (RQ&T) steel plate. The optical microscopy of the DQ steel shows deformed grains elongated along the rolling direction, while complete equiaxed grains are visible in RQ steel. Transmission electron microscopy (TEM) of the DQ steel shows refined lath martensite with high density of dislocations, which acts as preferred precipitation sites for NbC or Nb(C,N) particles during tempering. In all the plates, strength decreases with increasing tempering temperature. The strength of RQ steel increased significantly compared with that of DQ steel at the higher tempering temperature, which leads to better tempering resistance in DQ steels. The optimum combination of strength and toughness (yield strength (YS) reaches 585 MPa, tensile strength (TS) 667 MPa, and Charpy impact energy at 253 K of 291 J) in the DQ steels is achieved by quenching at 1113 K and tempering at 923 K.     

Comparison of ZrN and TiN formed by plasma based ion implantation & deposition

ZrN and TiN films have been deposited on Si substrates without additional heating using plasma based ion implantation & deposition (PBII&D) with pulse voltage from 0 to 5 kV. High quality columnar films have been obtained in both systems with a slight nitrogen deficiency. For ZrN, a marked reduction of the growth rate was observed when depositing with pulse bias, which was not observed for TiN, caused presumably by different partial sputter yields. A transition of the texture from (111) to (200) is again present in both systems, however with the transition occurring at a different pulse bias. Hardness values of 18-20 GPa and 22-24 GPa have been observed for TiN and ZrN, respectively.     

Study of adhesion of TiN grown on a polymer substrate

TiN films were deposited on polycarbonate substrates by cathodic vacuum arc using the plasma immersion ion implantation and deposition (PIII&D) method. The biaxial intrinsic stress in the film deposited using PIII&D with 3 kV applied bias was 0.3 GPa — much lower than that found in films deposited without the application of high-voltage pulsed bias. It was found that the dominant mechanism for generating stress in the TiN film was thermal stress arising from the large difference between the thermal expansion coefficient of TiN and that of the polymer. Tensile testing was used to ascertain film adhesion and a model was used to estimate the adhesion between the film and the substrate. It was found that PIII&D strongly reduced the stress in the TiN film and increased the adhesion to the polycarbonate. The ultimate shear strength of adhesion is of the same order of magnitude as that of TiN on stainless steel.     

Correction to: Calibration of Laser Penetration Depth and Absorptivity in Finite Element Method Based Modeling of Powder Bed Fusion Melt Pools

Metals and Materials International - In the original publication of the article, Fig. 15 was published incorrectly.     

Effect of Tempering on the Oxidation Behaviour of a Roll-Grade High-Speed Steel During Thermal Cycling

Oxidation of Metals - The oxidation characteristics of a roll-grade high-speed steel with different tempering heat treatments were studied under thermal cycling conditions at 650 °C...