Titanium alloys for deep marine engineering

2021 ◽  
pp. 238-246
Author(s):  
A. S. Oryshchenko ◽  
V. P. Leonov ◽  
V. I. Mikhaylov
Keyword(s):  
Yield Strength ◽  
Titanium Alloys ◽  
Deep Sea ◽  
Kurchatov Institute ◽  
The Creation ◽  
Marine Engineering

The results of the work of the NRC “Kurchatov Institute” – CRISM “Prometey” on the creation of titanium alloys for deep-sea marine equipment, vehicles and submersibles are presented. The paper considers development of titanium alloys with a yield strength of more than 1000 MPa.

scholarly journals KOMPETENSI PROGRAM STUDI DIPLOMA TEKNIK PERKAPALAN DALAM INDUSTRI MARITIM INDONESIA

2010 ◽  
Vol 16 (1) ◽  
pp. 16
Author(s):  
Mohd Ridwan ◽  
Eko Yulianto
Keyword(s):  
Foreign Exchange ◽  
National Income ◽  
Maritime Transportation ◽  
Maritime Industry ◽  
Naval Architecture ◽  
Ship Building ◽  
The Creation ◽  
Marine Engineering ◽  
Diploma Program ◽  
New Jobs

Mohd Ridwan, Eko Yulianto, in paper competency of naval architecture diploma program on Indonesian maritime industry explain that Shipbuilding engineering professionals is part of the leading maritime industry is expected to become the motor of development of national maritime fleet in the implementation of cabotage (Impres No.5, 2005), this will reduce foreign exchange spending nearly 99 trillion rupiah per year due to the use of foreign fleets, and the creation of new jobs as a supporter of the maritime industry. So the presence of workers who have competence in the field of shipbuilding (ship building, naval architecture, marine engineering enginerring and maritime transportation) is urgently needed and their capability to compete with other countries that previously controlled the sea as a source of national income should be the Indonesian government's attention. Keywords: Professional shipbuilding techniques, competency

scholarly journals Investigations of Mechanical Properties of API P110 Steel Casing Tubes Operated in Deep-Sea Sour Condensate Well Conditions

2020 ◽  
Vol 27 (3) ◽  
pp. 121-129
Author(s):  
Yao Zilin ◽  
Wang Yu ◽  
Yang Xuefeng ◽  
Gao Anping ◽  
Zhang Rong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Strength ◽  
Yield Strength ◽  
Deep Sea ◽  
Performance Model ◽  
Continuous Change ◽  
Element Analysis ◽  
Equivalent Yield

AbstractDue to the complexity of the marine environment, in deep-sea drilling, all kinds of strings are corroded by different deep-sea conditions for a long time, accompanied by high temperature and high pressure, which lead to the continuous change of mechanical properties of materials. In order to solve the problem that the material mechanical parameters cannot be accurately described in the performance analysis of the casing, deep-sea simulated corrosion and material damage experiments of P110 material were carried out in this paper. Mass loss and tensile experiments on corrosion-damaged test pieces were conducted under different corrosion experimental periods. The changes in mechanical properties of the material were analyzed. Equations of the variation of the equivalent yield strength and the equivalent tensile strength were obtained. The results show that the equivalent yield strength and the equivalent tensile strength decrease with the increase of the weight loss rate. Based on the experimental results and finite element analysis, a method for establishing the material corrosion model was proposed in this paper. The deep-sea drilling corrosion performance model of P110 material was established, which greatly reduced the error caused by the material uniformity assumption in finite element analysis. This paper provides a theoretical basis for the analysis of reliability and life of P110 materials in wells.

scholarly journals GENERAL ENGLISH AND MORE OR LESS TECHNICAL ESP ON THE EXAMPLE OF WORD LISTS

2021 ◽  
pp. 421
Author(s):  
Zorica Đurović ◽  
Milica Vuković Stamatović
Keyword(s):  
Corpus Linguistics ◽  
Real Life ◽  
English Word ◽  
Word Lists ◽  
The Common ◽  
The Creation ◽  
Marine Engineering ◽  
The Way

The renewed interest in vocabulary research, especially due to its meaning-carrying significance in technical Englishes, has cleared the way to the development of corpus linguistics methods based on real-life texts. As the learning/teaching of general English leads towards the learning/teaching of English for a Specific Purpose (in line with the learner’s needs), so the creation of general English word lists imposes the creation of technical word lists, aiming to achieve a desired level of the target corpus comprehension. In this paper, we discuss the common grounds and specifics of various levels of general and technical English in terms of their lexical coverage of texts, specifically addressing the example of marine engineering technical manuals. 

Research on Contact Strength between Roller Screw Pair on Hoisting Mechanism Applied in Deep Sea Crane

2013 ◽  
Vol 423-426 ◽  
pp. 2001-2005 ◽  
Author(s):  
Hui Wang ◽  
Min Hui Tong ◽  
Pei Zheng
Keyword(s):  
Deep Sea ◽  
Major Part ◽  
Large Diameter ◽  
Surface Hardness ◽  
Contact Problems ◽  
Theoretical Support ◽  
Roller Screw ◽  
New Type ◽  
Marine Engineering ◽  
The Impact

Roller screw pair is the major part of the rope guiding device that used in deep-sea hoisting mechanism. This paper focuses on the contact problems of the roller screw pair. The hoisting mechanism used in the deep sea engineering has the rope with large diameter, sustaining the great rope tension force. So its important to research the contact stress of the roller screw, This paper study the impact of surface hardness of the roller on the performance of the roller screw, sums up the effect of hardness on the bearing capacity of the roller, and provides the theoretical support and references for the designing and application of this new type of roller screw in marine engineering.

scholarly journals Deep-Sea Mining May Have Deep Economic, Environmental Impacts

Eos ◽  
2020 ◽  
Vol 101 ◽  
Author(s):  
James Dacey
Keyword(s):  
Environmental Impacts ◽  
Deep Sea ◽  
Environmental Concerns ◽  
The Creation

A new report supports the creation of a compensation fund for nations that rely on terrestrial mining, but it fails to dispel environmental concerns over deep-sea mining.

scholarly journals Effect of Aging Time on Microstructure and Mechanical Properties in a Cu-Bearing Marine Engineering Steel

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3638
Author(s):  
Mingxue Sun ◽  
Yang Xu ◽  
Jin Wang
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Tensile Properties ◽  
Aging Time ◽  
Aging Process ◽  
Age Hardening ◽  
Face Centered Cubic ◽  
Dislocation Interaction ◽  
Engineering Steel ◽  
Marine Engineering

This study elucidated the structure–property relationship in a Cu-bearing marine engineering steel that was water cooled and then aged at 500 °C for 0.5–3 h. The microstructural features, tensile properties and impact properties were comparatively investigated as a function of aging time. When the aging period was increased, the Cu precipitates underwent coarsening, and a stable face-centered cubic (fcc) formation occurred. Additionally, the tensile properties were significantly improved at the expense of low temperature toughness, which can be attributed to the presence of nano-sized Cu precipitates. The increment of yield strength mainly derived from Cu precipitate–dislocation interaction strengthening effects (232 MPa for 1 h and 199 MPa for 3 h.) during aging process. Therefore, optimization of mechanical properties was achieved by controlling the parameters of aging process. The peak age hardening condition (i.e., at 500 °C for 1 h) resulted in the yield strength of 755 MPa, tensile strength of 812 MPa, elongation of 26.3% and impact energy of 78 J at −80 °C.

scholarly journals Deformation behaviour of beta phase with similar chemical composition in beta and alpha+beta titanium alloys

2020 ◽  
Vol 321 ◽  
pp. 11082
Author(s):  
Xin Xu ◽  
Ioannis Bantounas ◽  
David Dye
Keyword(s):  
Yield Strength ◽  
Titanium Alloys ◽  
Deformation Behaviour ◽  
Beta Phase ◽  
Total Elongation ◽  
Deformation Twinning ◽  
Transformation Induced Plasticity ◽  
Β Phase ◽  
Beta Titanium ◽  
Similar Chemical

Twinning-induced plasticity (TWIP) and transformation-induced plasticity (TRIP) in β titanium alloys have been attracting significant interest, since they offer the possibility to provide work hardening and thus, ductility. Here a quaternary Ti-Al-Cr-Mo metastable β alloy has been designed with an excellent combination of strength ductility that exploits the TWIP and TRIP effects. Its engineering yield strength, tensile strength and total elongation are 737 MPa, 999 MPa and 24%, respectively. In order to increase the yield strength but retain ductility, an attempt has been carried to design an α+β alloy with a bimodal microstructure. The composition of the β phase in the α+β alloy was tuned to provide deformation twinning of the β phase. The content of the major α and β stabilising elements, i.e. Al, Cr and Mo, in the β phase of the α+β alloy was similar to the β alloy, but the deformation twinning was not observed in the β phase. It is suggested that this may be due to over-stabilisation of the β phase and/or to the different stress/strain and dislocation distributions in the α+β alloy caused by the presence of β phase.

Problems of Creating Computer Integrated Manufacture for Pilot Mechanical Engineering

1996 ◽  
Vol 210 (6) ◽  
pp. 501-507
Author(s):  
E O Adamov ◽  
V G Gnedenko ◽  
S M Dukarskii
Keyword(s):  
Mechanical Engineering ◽  
Research Work ◽  
High Technology ◽  
Research Centre ◽  
Kurchatov Institute ◽  
Level Of Automation ◽  
Scientific Research Work ◽  
Technical Systems ◽  
The Creation ◽  
Russian Research

The specific features of experimental mechanical engineering require production and technical systems (PTSs) to be highly flexible. At the same time, the necessity of engineering and production support for scientific research work and the development of new equipment with limited labour resources in the shortest period of time make it necessary to increase the level of PTS automation. The problem of flexible automation of PTSs can be solved by creating a computer integrated manufacture (CIM). The present article describes the experience of the creation of CIM for the production of high-technology experimental equipment at the Russian Research Centre (RRC) ‘Kurchatov Institute’. The system functions and the level of automation of various activities in the system are described. Methods of overcoming many troubles encountered during the creation of CIMs are shown.

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