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Online since: January 2009
Authors: Ke Xing Song, Yan Fu Yan, Li Fang Feng, Xiao Xiao Guo, Kun Tang
Bi5Sb solder alloy with the melting point of about 280℃ has bad solderability and mechanical properties.
In the present work, the new BiSbCu ternary alloy was prepared by adding different contents of Cu to Bi5Sb solder alloy to improve its solderability and mechanical properties.
There are plenty of factors to impact the wetting property of liquid solder.
[8] YAN Yan-fu, LIU Jian-ping, SHI Yao-wu, et al.Effect of Ag and Ni particles on mechanical properties and wettability of SnPb composite solder[J].
Effect of Ag and Ni Fine Particles on Mechanical Properties of SnPb Composite Solder[J].Rare Materials and Engineering. 2005, 34(4):622~626
Online since: December 2006
Authors: Dong Il Kwon, Ju Young Kim, Kwang Ho Kim, Jung Suk Lee, Kyung Woo Lee
Flow properties and stress state are indispensable factors for safety assessment of structural materials in operation, which were evaluated using instrumented indentation tests (IITs).
Introduction Instrumented indentation test (IIT) has been extensively used to evaluate mechanical properties and stress state of structural materials in operation due to non-destructive and simple experimental procedure [1-4].
Among them, the evaluation of flow properties and residual stress are powerful since these are indispensable factor for the safety assessment [2,3].
Flow properties, primarily yield strength and tensile strength, are generally considered the most fundamental mechanical properties.
Algorithms for Evaluating Flow Properties and Stress State Flow Property Measurement Using IIT.
Online since: July 2011
Authors: Brian Gabbitas, De Liang Zhang, Peng Cao, Stiliana Raynova, V.N. Nadakuduru
The mechanical behaviour of the as-forged bulk materials was found to be dependent on several factors such as initial powders used, green density of the powder compact, forging parameters used during forging.
The mechanical behaviour of the as-forged samples was dependent on several factors.
In the case of Ti-6Al-4V alloy the oxygen content in the initial powders affected the mechanical behavior.
Thirdly the forging parameters effected the densification, which inturn affected the mechanical properties.
On the other hand the room temperature mechanical properties Ti-47Al-2Cr alloy were far below than that reported from other works [9] due to the reasons mentioned above.
Online since: May 2022
Authors: Ya Hao Liu, Jian Zheng, Yong Qiang Du
During storage, heat and oxidative aging is the most pervasive factor impairing the mechanical properties.
After heat and oxidative aging, the HTPB coating’s cross-linked network is destroyed, and the mechanical properties will deteriorate [2].
Aging of rubber materials will affect other mechanical properties, for instance dynamic properties.
The dynamic mechanical properties after aging were tested in the frequency range of 0-100Hz.
Xie, Experimental investigations on the dynamic mechanical properties of aged rubbers, Polym.
Online since: March 2016
Authors: Yang Gao, Shi Feng Shi, Yong Ji Niu, Jian Jun Tian, Chao Wang, Zhi Wei Zhang, Ning An
Large quantities of VIDP400 vacuum furnace smelting DZ417G oriented superalloys smelting process has been researched, analysis of the main factors affecting the organizational uniformity and stability, as well as the impact of high temperature tensile and lasting properties has been studied.
Effect of heat treatment on microstructure and mechanical properties of the alloy DZ417G have revealed [2-10].
For the demand of customers on production of large quantities, the company used high-volume vacuum furnace smelting VIDP400 DZ417G oriented superalloys, and make certain of the main factors affecting the organizational uniformity and stability, as well as high temperature tensile and lasting properties.
Mechanical Properties.
Tables 2 and 3 is mechanical properties of the DZ417G superalloy.
Online since: June 2017
Authors: Hui Li Shao, Qiao Li, Chen Jiang, Ge Sheng Yang, Min Min Yu, Hui Hui Zhang
The results of water retention value (WRV) and the characteristic parameter of the fibrillation degree revealed that the ranking of factors affecting the fibrillation degree of fibers was NaOH concentration > homogeneous time > temperature > bath ratio, using the extreme difference analysis and variance analysis methods.
It is a naturally biodegradable and environmentally friendly fiber with excellent properties.
Therefore, the fibrillation tendency of Lyocell fiber is promising to be used to reinforce the polymer and fabricate renewable and biodegradable composites with improved mechanical properties.
The results of WRV reveal that the ranking of factors which affect fibrillation degree of fibers is NaOH concentration > homogeneous time > temperature> bath ratio, using the extreme difference analysis and variance analysis methods.
Physical and mechanical properties of polyvinyl alcohol and polypropylene composite materials reinforced with fibril aggregates isolated from regenerated cellulose fibers.
Online since: December 2024
Authors: Xian Wei Niu, Tao Ren, Jun Ming Zhang
After welding, the microstructure and mechanical properties of the joint were observed.
The factors affecting the properties of welded joints were explored by combining microstructure with mechanical tests.
Chemical composition (mass fraction, %) and mechanical properties of base metal.
(1) Welding heat input is the main factor affecting weld formation.
It is suggested to further study the factors affecting the toughness of the weld zone and propose corresponding control measures to guide the prefabricated welding of double-connected pipes.
Online since: October 2014
Authors: Yu Xian Li, Mei Hong Liu, Xi Chen Yuan, You Dong Jia
Finally analyses and summarizes the main factors which we must consider to improve the sealing property of non-asbestos fiber gasket, and points out the main research ways of non-asbestos in the future.
Therefore, the joint components (flange, gasket and bolt) own state and external factors such as working condition (including medium, pressure and temperature), and assembling status must all be taken into consideration.
The factors must be considered to improve the sealing property of non-asbestos gasket.
These new type of non-asbestos sealing composite materials not only improves the synthetic mechanical properties but also reduce the product’s cost [9-11].
There is still certain gap in thermal endurance properties [18].
Online since: January 2010
Authors: Paulo Roberto Cetlin, Maria Teresa Paulino Aguilar, Elaine Carballo Siqueira Corrêa
This phenomenon is associated with an internal distortion process that takes place in the bar as it flows through the die, leading to the development of higher drawing forces and affecting the subsequent mechanical behavior of the material.
This phenomenon, whose magnitude is affected by the die semi-angle α and the reduction of area per pass r [4,5], is associated with an internal distortion process that takes place in the bar as it flows through the die, leading to the development of higher drawing forces and affecting the subsequent mechanical behavior of the material [4,6].
Therefore, Table 2 presents the average effective strains εmv and the redundant deformation factors φv of the AISI 304 stainless steel drawn bars, whose values have been calculated employing the final effective strain distributions obtained through visioplasticity (figure 4) and the procedure formerly displayed in other experimental evaluation [13].
Table 2: Average deformation εm and redundant deformation factors φ obtained in the visioplasticity and the stress-strain superposition techniques.
The superposition technique reflects the hardening characteristics of the material and its final mechanical properties, whereas the visioplasticity results would not be influenced by the subsequent mechanical behavior of the metal.
Online since: October 2013
Authors: Zhao Mei Xu, Zong Hai Hong
Experimental investigation on laser milling of Al2O3 ceramic Zhaomei Xu 1,2,a, Zonghai Hong 3,b 1Faculty of Mechanical Engineering, Huaiyin Institute of Technology, Huaian, 223003 2School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013 3Faculty of Foreign Language, Huaiyin Institute of Technology, Huaian,223003 afuyun588@163.com, bhongzonghai@163.com Keywords: :Laser milling;Al2O3 ceramic;Orthogonal experiment Abstract: Milling of Al2O3 ceramic is affected by various factors.
The results indicated that the sequence of the factors affecting on the milling depth was laser power,scanning speed, overlap amount,defocused quantity successively.
The roughness was increased because the molten on the specimen surface failed to be removed,thus the pressure of the assist huff gas should be increased to improve the surface quality. 1 Introduction As ceramic materials have many excellent properties, such as high insulated property, excellent heat-resistant, high wear-resistance and good erode-resistant property, they are widely applied in electronic industry and mechanical industry.
Four factors and four levels orthogonal table are selected as Table.
Fig.3 Measurement of milled parts depth Fig.4 Measurement of surface roughness Milling 5 Conclusion By using the range method known orthogonal, of The factors affecting the laser milling depth on the order of magnitude is the laser power, scanning speed, the amount of overlap and the defocus amount.
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