Microstructural Characterization of Equiatomic NiTi Alloy Prepared by High Energy MillingMaterials Science Forum - Tập 530-531 - Trang 53-58
Maria do Carmo Silva, Ana Cris R. Veloso, Rodinei Medeiros Gomes, Severino Jackson Guedes de Lima, Tadeu Antônio de Azevedo Melo, Francisco Ambrózio Filho
NiTi alloys with equiatomic composition of NiTi have the highest technological
interest for its potencial application in differents areas such as biomedical, naval, aerospace,
nuclear, automobilist , robotic,etc. In this work , it was used a 50Ni50Ti at % powder mixture,
comercially pure, prepared by mechanical alloying in a Attritor with the following conditions:
the milling speed and the...... hiện toàn bộ
Failure Pressure Estimations for Corroded PipelinesMaterials Science Forum - Tập 758 - Trang 65-76
Matherson L. da Silva, H.S. da Costa Mattos
The goal of the present paper is to propose a simple methodology to estimate the failure pressure of thin-walled metallic pipelines with arbitrary localized corrosion damage. This methodology is conceived as a preliminary tool for a quick analysis of the structural integrity of real corroded pipelines. Due to the different possible geometries of the corroded region, the exact analysis of t...... hiện toàn bộ
The Influence of Aluminium Alloy Quench Sensitivity on the Magnitude of Heat Treatment Induced Residual StressMaterials Science Forum - Tập 524-525 - Trang 305-310
J. S. Robinson, David A. Tanner
To produce useful strengthening, precipitation hardenable aluminium alloys rely on rapid
quenching from the solution heat treatment temperature to suppress the formation of coarse
equilibrium second phases. An unavoidable consequence of the rapid quenching of thick sections is
the severe thermal gradients that quickly develop in the material. The attendant inhomogeneous
plastic flow can th...... hiện toàn bộ
Characterization and Mechanism Analysis of Growth Bands in Chemical Vapor Deposited ZnSMaterials Science Forum - Tập 944 - Trang 631-636
Peng Fei Zhang, Hongwei Li, Hai Yang, Nai Guang Wei, Jian Ming Li, Dongxu Li
In the chemical vapor deposited zinc sulfide, it often appears obvious light and dark growth bands along the growth direction, which will affect the homogeneity of optical properties of CVD ZnS and the efficiency of subsequent heat treatment. X-ray diffraction, Metallographic microscope and SEM were used to detect the crystal structure, grain size and microstructure, and the concentration ...... hiện toàn bộ