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Diffusion Carbide Layers, Formed on the Surface of Steel in the Vacuum Titanizing Process KASPRZYCKA Ewa1,NAKONIECZNY Aleksander1,BABUL Tomasz1,SENATORSKI Jan1 (1.Institute of Precision Mechanics, Warsaw, Poland) 摘要:Diffusion layers produced on carbon steel surface in vacuum titanizing process were investigated. Studies of layers thickness, their morphology, titanium, carbon and iron......
扩散条件下抽拉速率对Fe-4.2Ni合金定向凝固组织演化的影响冯周荣1,沈军1,王伟1,闵志先1,傅恒志1(1.陕西省西安市西北工业大学凝固技术国家重点实验室)摘 要:在内径为1 mm的细管中进行了Fe-4.2Ni亚包晶合金扩散条件下的定向凝固实验.在15μm/s抽拉速率下得到了树状组织,共生组织以及δ/γ两相分离生长的凝固组织,组织演化规律为:δ单相→δ/γ两相树状组织→γ+两相共生组织→δ/γ两相分离并列生长组织;抽拉速率为35μm/s时,获得了以γ岛状为主的凝固组织,组织演化规律为:δ单相→δ/γ两相树状......
COUPLED LINEAR-RESPONSE OF INHOMOGENEOUS MEDIA:A GENERAL THEORY AND ITS APPLICATIONS南策文,金伏生摘 要:<正>A generally exact theory for predicting the effec-tive behavior of coupled linear-response for inhomogeneous me-dia is developed.The general solutions for the coupled problemsof two fields and three fields are given.The applications of thetheory......
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profiles in diffusion zone have been conducted. The effect of the vacuum level during the process and the process parameters such as time and temperature on layer diffusion growth on the carbon steel surface has been investigated. 关键词:Diffusion layers; thermochemical treatment; diffusion chromizing; carbide layer; [全文内容正在添加中] ......
; 文章编号:1672-7207(2019)10-2536-16 Experimental study on effective diffusion distance of cement slurry in porous media under permeation grouting ZHANG Yu, GUO Hao, CHEN Tielin, WANG Rongxin, CHENG... influence on the grouting results, and the effective diffusion distance needs to be calculated. Firstly, one-dimensional permeation grouting system composed of subsection-splicing plexiglass was created......
temperature oxidation; T91 steel; cerium; reactive element; diffusion 1 Introduction The beneficial effects of reactive element additions on the oxidation resistance of Fe-Cr alloys are well known [1-4... steel were studied. Oxidizing was performed at 600 °C in water vapor. The purpose of the present work is to study the effects of CeO2 coating on the diffusion profile of the oxide scale at elevated......
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was detected. Key words: Al-Ti-Zr ternary system; phase equilibrium; diffusion triple; solubility 1 Introduction Coupled with high temperature strength and oxidation resistance, low density and low thermal... of Materials Science and Engineering, Central South University, Changsha 410083, China Received 26 October 2015; accepted 11 April 2016 Abstract: Through alloy sampling combined with diffusion triple technique......
diffusion triple technique combined with alloy samples approach. Assisted with electron probe microanalysis (EPMA) and X-ray diffraction (XRD) techniques, isothermal sections at 1073 and 1173 K... transition reaction TiNi3+Ti3Pt5→Ti2(Ni,Pt)3+TiPt3+ at a temperature between 1073 and 1173 K was deduced. Key words: Ti-Ni-Pt ternary system; phase equilibrium; diffusion triple; solubility 1......