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New Evolve of Plasma Alloying on Titanium Alloys Surface

Zhang Gaohui,Xu Zhong,Zhang Pingze,Ge Hongliang,Cui Yujian,Wen Tingdun,Pan Junde

Strategic Study of CAE 2007, Volume 9, Issue 11, Pages 163-166

Abstract: wear, corrosion resistance and enhancing fire retardance, several plasma surface treating methods on titaniumalloys had been presented, which included add-arc glow hydrogen-free carburizing plasma depositing on titaniumalloy, double glow plasma hydrogen-free carburizing on titanium alloy, double glow Mo diffusing, The results showed that gradient layer had formed on the titanium alloys surface, that was of great significance

Keywords： titanium alloy hydrogen-free carburizing resistant friction burn-resistant

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Application of Titanium Alloy Materials for the Pressure-Resistant Structure of Deep Diving Equipment

Jiang Peng, Wang Qi, Zhang Binbin, Wang Yang

Strategic Study of CAE 2019, Volume 21, Issue 6, Pages 95-101 doi: 10.15302/J-SSCAE-2019.06.018

Abstract:

The development of titanium alloy deep-diving equipment is first summarized, and the desired propertiesof titanium alloy materials are then analyzed considering the characteristics of the deep-sea serviceTo satisfy the urgent demand for titanium alloy equipment in the deep-diving field, we propose to furtherincrease basic research and engineering application of titanium alloy materials, and promote innovative

Keywords： deep diving equipment pressure-resistant structure titanium alloy key technology

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New Development of Double Glow Plasma Surface Metallurgy Technology

Xu Zhong,Zhang Gaohui,Zhang Pingze,Zhang Yanmei,Chi Chengzhong,Yuan Qinglong

Strategic Study of CAE 2005, Volume 7, Issue 6, Pages 73-78

Abstract: of the double glow plasma surface metallurgy technology in the last few years： Ti - Cu and Ti - Cr burn-resistantalloys have been produced on the surfaces of titanium and titanium alloy Ti6A14V.Co - W - Mo - Fe age-hardened high speed steel and high Cr alloy have been formed on the surface of carbonTi - Cu wear-resistant alloy was also produced on the surface of pure copper.carbon source, hydrogen-free carburising has been achieved in order to avoid hydrogen embrittlement of titanium

Keywords： surface metallurgy double glow plasma surface alloying burn resistant titanium alloy hydrogen-free carburizing

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Machinability of damage-tolerant titanium alloy in orthogonal turn-milling

Tao SUN, Lufang QIN, Junming HOU, Yucan FU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3, Pages 504-515 doi: 10.1007/s11465-020-0586-2

Abstract: The damage-tolerant titanium alloy TC21 is used extensively in important parts of advanced aircraft because

Keywords： orthogonal turn-milling damage-tolerant titanium alloy tool life and failure machined surface integrity

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Sequential degradation-based burn-in test with multiple periodic inspections

Frontiers of Engineering Management 2021, Volume 8, Issue 4, Pages 519-530 doi: 10.1007/s42524-021-0166-0

Abstract: Burn-in has been proven effective in identifying and removing defective products before they are deliveredMost existing burn-in models adopt a one-shot scheme, which may not be sufficient enough for identificationuseful life prediction and accelerated lifetime test, this study proposes a sequential degradation-based burn-inWe cast the problem into a partially observed Markov decision process to minimize the expected total burn-in

Keywords： burn-in degradation multiple inspections Wiener process partially observed Markov decision process

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Dual-Material Electron Beam Selective Melting: Hardware Development and Validation Studies Article

Chao Guo, Wenjun Ge, Feng Lin

Engineering 2015, Volume 1, Issue 1, Pages 124-130 doi: 10.15302/J-ENG-2015013

Abstract:

Electron beam selective melting (EBSM) is an additive manufacturing technique that directly fabricates three-dimensional parts in a layerwise fashion by using an electron beam to scan and melt metal powder. In recent years, EBSM has been successfully used in the additive manufacturing of a variety of materials. Previous research focused on the EBSM process of a single material. In this study, a novel EBSM process capable of building a gradient structure with dual metal materials was developed, and a powder-supplying method based on vibration was put forward. Two different powders can be supplied individually and then mixed. Two materials were used in this study: Ti6Al4V powder and Ti47Al2Cr2Nb powder. Ti6Al4V has excellent strength and plasticity at room temperature, while Ti47Al2Cr2Nb has excellent performance at high temperature, but is very brittle. A Ti6Al4V/Ti47Al2Cr2Nb gradient material was successfully fabricated by the developed system. The microstructures and chemical compositions were characterized by optical microscopy, scanning microscopy, and electron microprobe analysis. Results showed that the interface thickness was about 300 μm. The interface was free of cracks, and the chemical compositions exhibited a staircase-like change within the interface.

Keywords： additive manufacturing electron beam selective melting gradient materials titanium alloy TiAl alloy

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Monocyte subsets and their differentiation tendency after burn injury

Guangqing Wang, Zhaofan Xia

Frontiers of Medicine 2013, Volume 7, Issue 4, Pages 397-400 doi: 10.1007/s11684-013-0298-7

Abstract: present study may help enhance understanding on the perturbation of the immune system after severe burn

Keywords： monocyte differentiation burn

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Anodization of titanium alloys for orthopedic applications

Merve İzmir, Batur Ercan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 1, Pages 28-45 doi: 10.1007/s11705-018-1759-y

Abstract:

In recent years, nanostructured oxide films on titanium alloy surfaces have gained significant interestand titanium alloys and summarizes the interactions between anodized titanium alloy surfaces with cellsIt will start with summarizing the mechanism of nanofeatured oxide fabrication on titanium alloys andthen switch its focus on the latest findings for anodization of titanium alloys, including the use offluoride free electrolytes and anodization of 3D titanium foams.

Keywords： titanium alloys anodization biocompatibility orthopedics

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Achievements in burn surgery over the past 50 years in China

WANG Shiliang

Frontiers of Medicine 2008, Volume 2, Issue 4, Pages 332-336 doi: 10.1007/s11684-008-0063-5

Abstract: This paper reflects on the advancements of clinical and scientific research in the field of burn surgery

Keywords： immunology scientific nutritional microbiology engineering

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Numerical simulation of charge stratifications to improve combustion and NO formation of lean-burn SI

Zhijun PENG ,

Frontiers in Energy 2009, Volume 3, Issue 3, Pages 353-358 doi: 10.1007/s11708-009-0035-8

Abstract: The influences of charge stratification on spark ignition (SI) engine combustion and NO emission were analyzed using a phenomenological model. The mixture in the cylinder was divided spherically into three parts: a central core with a stoichiometric air-fuel charge, a dilution region without any combustible charge, and a mixing region lying between the core and the dilution region. Three mixture stratification parameters such as the extent of dilution in the mixing region, the extent of combustible charge in the mixing region, and the gradient of stratification in the mixing region were investigated. The results indicate that the extent of combustible charge in the mixing region could reduce in-cylinder NO formation significantly, compared with the extent of dilution in the mixing region. As long as the degree of dilution in the mixing region is within the dilution limit of the combustible charge, the gradient of dilution has little effect on combustion and NO formation.

Keywords： charge stratification SI engine lean-burn combustion NO emission

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Experimental study of stratified lean burn characteristics on a dual injection gasoline engine

Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG

Frontiers in Energy 2022, Volume 16, Issue 6, Pages 900-915 doi: 10.1007/s11708-021-0812-6

Abstract: Lean burn mode could greatly reduce pumping loss and decrease the fuel consumption of gasoline enginesthis study, dual injection stratified combustion mode is used to accelerate the burning rate of lean burnIt is shown that the lean burn limit can be extended to Lambda= 1.8 with a low compression ratio of 10There exists a spark window for dual injection stratified lean burn mode, in which the spark timing hasThe dual injection stratified lean burn has a wide range of applications which can effectively reduce

Keywords： dual injection stratified lean burn gasoline engine particulate matter emission combustion analysis

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Progress in developing an innovative lean burn catalytic turbine technology for fugitive methane mitigation

Shi SU, Xinxiang YU

Frontiers in Energy 2011, Volume 5, Issue 2, Pages 229-235 doi: 10.1007/s11708-011-0147-9

Abstract: of the fugitive mine methane, and then presents research progress in developing an innovative lean burn

Keywords： coal mine methane mitigation and utilization lean burn gas turbine catalytic combustion

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Titanium: The Metal Giant in the New Millennium

Yang Yuchun

Strategic Study of CAE 2002, Volume 4, Issue 3, Pages 21-31

Abstract:

The rise and development of the extraction of titanium sponge and the manufacture of titanium millThe wide application and important role of metallic titanium, titanium products and titanium-based alloysThe market prospect for titanium industry in the new millennium is forecast and some suggestions on thebetter development of titanium industry are put forward.

Keywords： titanium titanium sponge titanium products titanium industry market demand and supply of titanium

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The Near β Forging Overthrows the Conventional Forging Theory and Develops a New Tri-modal Microstructure

Zhou Yigang,Zeng Weidong,Yu Hanqing

Strategic Study of CAE 2001, Volume 3, Issue 5, Pages 61-66

Abstract:

The near beta forging for titanium alloys proposed by the authors has overthrown the conventionalalloy, but do produce a new trimodal microstructure, which consists of about 20% equiaxed alpha, 50%alloy microstructures (i.e. equiaxed, bi-modal, basketweave and lamella), but also has the advantagesThe near beta forging is applicable not only to alpha-beta alloy, but also to alpha, near alpha and nearbeta titanium alloys.

Keywords： titanium alloy near beta forging tri-modal microstructure

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Application of Titanium in Automotive Industry and Metallurgical Technologies for Cutting the Cost ofTitanium materials

Yang Yuchun

Strategic Study of CAE 2005, Volume 7, Issue 8, Pages 9-17

Abstract:

The advantages offered by titanium materials to the automotive industry including reducing vehicleLow cost production technologies of sponge titanium and titanium materials are introduced and evaluated

Keywords： titanium titanium materials in automotive manufacture new metallurgical processing of titanium