scholarly journals Modeling the relationship between hydrogen content and mechanical property of Ti600 alloy by using ANFIS

2013 ◽  
Vol 37 (8) ◽  
pp. 5705-5714 ◽  
Author(s):  
Yuanfei Han ◽  
Weidong Zeng ◽  
Xuemin Zhang ◽  
Yongqing Zhao ◽  
Yu Sun ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Hydrogen Content ◽  
The Relationship

Effect of Hydrogen Content on Structure and Properties of Sintering Body Utilizing TC21 Hydrogenated Powder

2012 ◽  
Vol 581-582 ◽  
pp. 777-781
Author(s):  
Ya Qiang Tian ◽  
Ying Li Wei ◽  
Hong Liang Hou ◽  
Xue Ping Ren
Keyword(s):  
Mechanical Property ◽  
Grain Size ◽  
Titanium Alloy ◽  
Yield Strength ◽  
Hydrogen Content ◽  
Room Temperature ◽  
Sintered Body ◽  
Compressive Yield Strength ◽  
Structure And Properties ◽  
Die Forming

The effect of hydrogenation on structure and properties of TC21 alloy by die forming and sintering using hydrogenated powder was researched by means of the room-temperature die forming and sintering in protection air to produce titanium alloy. The results show that the structure of TC21 titanium sintered body using hydrogenated powder with hydrogen content of 0.39 wt% by die forming and sintering is thinner and the density is higher than the others. The compression strength and compressive yield strength of TC21 sintered body with hydrogen content of 0.39 wt% are well. With hydrogen content increasing, the structure of TC21 production using hydrogenated powder by die forming and sintering gets well and the grain size becomes smaller. After annealing, the structure of TC21 titanium production gets more uniformity and refinement obviously, and the hydrogen content of TC21 alloy safety state is achieved. In the end, the density and mechanical property of TC21 titanium alloy sintered body with hydrogen content of 0.39wt % is the best.

Study on the Relationship between Microscopic Structure and Mechanical Properties of HTPB Propellant

2010 ◽  
Vol 152-153 ◽  
pp. 1151-1155 ◽  
Author(s):  
Xu Chang Li ◽  
Jian Jiao ◽  
Jun Yan Yao ◽  
Liang Wang
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Cross Section ◽  
Structural Integrity ◽  
Solid Particles ◽  
Microscopic Structure ◽  
Structure State ◽  
Htpb Propellant ◽  
The Relationship ◽  
Bond Effect

By means of a tensile instrument and SEM, the mechanical property parameters of HTPB propellant test samples with different formulas were tested, and their microscopic fracture cross section patterns were observed. Take advantage of these testing results, the relationship between microscopic structure and mechanical properties of HTPB propellant was studied. The results show that the mechanical properties of a propellant are closely related to its microscpic structure state. The structural integrity of propellant is mainly influenced by the bond effect of the interface between binder and solid particles, solid particle’s shape, size and its distribution, the content of binder matrix, etc. These factors have important effects on the mechanical properties of propellant.

Studies of Microstructures and Properties of AZ91D Alloy Based on the Rheoforming Process

2015 ◽  
Vol 713-715 ◽  
pp. 2876-2879
Author(s):  
Xiao Ping Zheng ◽  
Ze Sheng Ji ◽  
Wei Wen Zhang ◽  
Ming Shao
Keyword(s):  
Mechanical Property ◽  
Plastic Deformation ◽  
Tensile Strength ◽  
Solid Fraction ◽  
Shape Factor ◽  
Holding Time ◽  
Az91d Alloy ◽  
Conventional Casting ◽  
Semi Solid ◽  
The Relationship

The semi-solid rheoforming process of AZ91D alloy with 9 % plastic deformation was investigated. The effect of holding time on the rheoforming formability of AZ91D alloy was analyzed. The relationship between holding time and microstructure, mechanical property was also researched. The results show that with increasing of holding time from 0 to 60 min at 575 °C, the filling distance increases firstly and then decreases, the solid fraction decreases firstly and then increases, the tensile strength and elongation are also increase firstly and then decrease. However, the increasing of holding time would lead to shape factor decreasing but particle coarsening. When holding time is 30 min, the solid fraction is lowest and the filling distance increases greatly. Compared to the conventional casting sample, the tensile strength and elongation of the rheoforming parts increase 43.9 % and 187.5 %, respectively.

Investigation of Microstructure and Mechanical Property of the Machinable B4C/BN Composites Fabricated by Hot-Pressing Process

2011 ◽  
Vol 415-417 ◽  
pp. 335-338
Author(s):  
Tao Jiang
Keyword(s):  
Mechanical Property ◽  
Phase Composition ◽  
Chemical Reaction ◽  
Hot Pressing ◽  
Weak Interface ◽  
Pressing Process ◽  
Sem And Tem ◽  
Xrd Patterns ◽  
The Relationship ◽  
Microstructure And Mechanical Property

The B4C/BN composites were fabricated by hot-pressing process in this research. The B4C/BN composites included the B4C/BN microcomposites and the B4C/BN nanocomposites. The B4C/BN microcomposites were fabricated by hot-pressing process, and the B4C/BN nanocomposites were fabricated by chemical reaction and hot-pressing process. In this research, the phase composition, microstructure, mechanical property and machinability of the B4C/BN microcomposites and B4C/BN nanocomposites were investigated. The XRD patterns results showed that there existed B4C phase and h-BN phase in the hot-pressed composites. The microstructure of the B4C/BN composites was investigated by SEM and TEM. The B4C/BN microcomposites and the B4C/BN nanocomposites sintered bulks exhibited the homogenous and compact microstructure, and the h-BN particles were homogenously distributed in the B4C matrix. The mechanical property of the B4C/BN microcomposites and the B4C/BN nanocomposites decreased gradually with the increase of h-BN content. The mechanical property of the B4C/BN nanocomposites was remarkably improved in comparison with the B4C/BN microcomposites. The machinability of the B4C/BN microcomposites and the B4C/BN nanocomposites increased gradually with the increase of h-BN content, the drilling rates of the B4C/BN composites specimens increased gradually with the increase of h-BN content. The relationship between the microstructure and machinability of the B4C/BN composites was analyzed. The microstructure showed that the weak interface of B4C/BN and cleavage behavior of laminate structured h-BN particles remarkably improved the machinabilty of B4C/BN composites.

Mechanical Property Changes of Zr-1.0Nb Alloy Cladding with Hydrogen Content

2016 ◽  
Vol 54 (3) ◽  
pp. 224-230
Author(s):  
Yong Kyoon Mok ◽  
Yeon Soo Na ◽  
Min Young Choi ◽  
Dae Gyun Ko ◽  
Yoon Ho Kim
Keyword(s):  
Mechanical Property ◽  
Hydrogen Content ◽  
Property Changes

scholarly journals Some Useful Mechanical Property Correlations for Nuclear Reactor Pressure Vessel Steels

2018 ◽  
Author(s):  
Randy K. Nanstad ◽  
William L. Server ◽  
Mikhail A. Sokolov ◽  
G. Robert Odette ◽  
Nathan Almirall
Keyword(s):  
Mechanical Property ◽  
Nuclear Reactor ◽  
Pressure Vessels ◽  
Nuclear Industry ◽  
Rigorous Approach ◽  
Pressure Vessel Steels ◽  
Physically Based ◽  
Induced Changes ◽  
The Relationship ◽  
Reactor Pressure

The use of correlations is common in the research and development arena of the nuclear industry with the realization that some applications with direct implications to safety demand a more rigorous approach. Most correlations involve the relationship between two experimental properties, such as that between hardness and tensile strength. There are others that are much more complicated and are often designated models because they incorporate physically-based knowledge; examples of this are predictive correlations for irradiation-induced embrittlement of reactor pressure vessels (RPV). The objective of this paper is to collect and discuss many of the commonly used correlations for applications to nuclear RPVs. This paper identifies and discusses various correlations that relate easily measured properties to properties that are more difficult, more time consuming, or more expensive to measure. In the case of irradiated RPV materials, irradiation-induced changes in easily measured properties are related to the changes in those more difficult to measure. It is noted that recognition and understanding of the uncertainties associated with all correlations is highly important.

Finite Element Analysis of the Bionic Tissue Engineering Scaffold for the Defect Cranium

2012 ◽  
Vol 184-185 ◽  
pp. 222-226
Author(s):  
Fan Fen Peng ◽  
Shu Xian Zheng ◽  
Jia Li
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Tissue Engineering ◽  
Finite Element Analysis ◽  
Tissue Engineering Scaffold ◽  
Element Analysis ◽  
Engineering Technology ◽  
Bionic Scaffold ◽  
Bottle Neck ◽  
The Relationship

The relationship between the porosity and the mechanical property was still a bottle-neck in bone tissue engineering scaffold. Porosity increasing may reduce the scaffold strength. In order to solve the contradiction, the idea of enhancing the mechanical properties by controlling the scaffold porosity was proposed in this paper. Using reverse engineering technology, 5 different porosity cranium scaffolds were first established. Their FE models were built through FE surface preprocessing and volume fitted meshing. According to results of static analysis, the displacements and stresses of the 5 porosity scaffolds were compared and discussed and it indicated that the 36% porosity bionic scaffold have good porous level and mechanical properties.

scholarly journals The Relationship between Hydrogen Content and Delayed Fracture in the Surface Treatment of Spring Steel.

1993 ◽  
Vol 44 (3) ◽  
pp. 260-264
Author(s):  
Kenji ISHIJIMA ◽  
Harumi UENO ◽  
Haruhisa MURAKAMI ◽  
Kazuo NAKAJIMA ◽  
Masaru AKIZAWA ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Hydrogen Content ◽  
Spring Steel ◽  
Delayed Fracture ◽  
The Relationship

Research on the Influence of Diffluent Salt Microstructural Variation in the Course of Recrystallization on the Strength of Salty Soil

2012 ◽  
Vol 170-173 ◽  
pp. 1226-1229
Author(s):  
Chun Lei Wang ◽  
Chong Xi Jiang ◽  
Feng Ju Guan
Keyword(s):  
Mechanical Property ◽  
Spatial Arrangement ◽  
Soil Strength ◽  
X Ray ◽  
Soil Microstructure ◽  
Additional Equipment ◽  
Before And After ◽  
The Relationship ◽  
Engineering Characteristic ◽  
Salty Soil

Salty soil distributed widely and the engineering characteristic was complicated. The mechanical property had the relationship with spatial arrangement of soil grains, mineral component and occurrence condition of diffluent salt. The soil microstructure was an important factor to engineering characteristics. The influence of diffluent salt recrystallization on soil strength was learned according to the microstructure analysis by using environment scanning electron microscope and additional equipment X-ray energy spectrum (EDX). The influence of microstructure variation on salt soil strength was obtained by direct shear test on the salty soil before and after dehydrating. The results showed that diffluent salt recrystallization affected soil internal structure. The salty soil microstructure character was different before and after dehydrating, which changed the soil- mechanical property of salty soil.

Experimental Study of Meijiang Artificial Island Fill

2014 ◽  
Vol 919-921 ◽  
pp. 678-681
Author(s):  
Xiao Cheng Su ◽  
Xiao Yun Wang ◽  
Zhi Liu
Keyword(s):  
Mechanical Property ◽  
Experimental Study ◽  
Industrial Waste ◽  
Particle Density ◽  
Great Influence ◽  
Compression Modulus ◽  
Coarse Grain ◽  
Coarse Particles ◽  
The Relationship ◽  
Compaction Degree

The artificial island physical and mechanical property of fill index has a great influence on the island stability and the development of displacement. The fill is generally composed of a lot of construction rubbish, industrial waste or the living garbage .We discuss the relationship between shear strength and coarse particle,density relations under different compactness through the experimental study in this paper. The results show that cohesion increases with the content of coarse particles,and compression modulus increases along with the increase of the density. When the content of coarse changed from small to large, compression modulus increases with the increase of coarse grain content at the beginning. When the content of coarse reached 20%, compression modulus with compaction degree increases fastest.

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