Research on Microstructure and Mechanical Property of the Production of Al-Si Alloy by Electric Warming

2010 ◽  
Vol 146-147 ◽  
pp. 661-665
Author(s):  
Niu Can Liu ◽  
Jun Qing Li ◽  
Zhong Xia Liu
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Commercial Production ◽  
Quartz Plate ◽  
Fe Content ◽  
Plate Filter ◽  
Microstructure And Mechanical Property

Adopting quartz plate filter of 20 mesh to filter the ZL102 alloy compounded by Al-30Si coarse alloy produced by electric warming, the Fe content in the alloy is reduced to 0.43% from 1.14%, the big massive and petaloid Fe phase becomes fine block-like. The tensile strength and elongation of the alloy arrive at 182MPa and 4.3% respectively, which increased by 38% and 290% separately compared with the alloy without filtration. The mechanical property of this alloy has been close to the alloy compounded by pure Al and it can fully meet the demand of commercial production.

Microstructure and Mechanical Property Analysis of the Metal Part by SLM

2013 ◽  
Vol 423-426 ◽  
pp. 693-698 ◽  
Author(s):  
Qun Qin ◽  
Guang Xia Chen
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Steel Powder ◽  
Stainless Steel Powder ◽  
Micro Hardness ◽  
Metal Part ◽  
Tensile Experiment ◽  
Microstructure And Mechanical Property

The objective of the research was that analyzed the microstructure and mechanical properties of metal part built by SLM in this paper. The tensile samples were made by SLM, the rupture gotten with tensile experiment was scan by SEM, and the rupture property was analyzed. The results of experiment showed: the parts formed by optimized parameters have a density above 96%, a tensile strength of 635MPa, an extension of 55.679% and an average micro hardness of HV307 for stainless steel powder. It is interesting to find that the phase of the built parts is also austenite by XRD, which is the same as that of the starting material.

Effects of a Small Addition of Cu or Ge on the Microstructure and Mechanical Property of an Al-Si Alloy

2006 ◽  
Vol 519-521 ◽  
pp. 425-430 ◽  
Author(s):  
Keiyu Nakagawa ◽  
Teruto Kanadani ◽  
Kenich Nakayama ◽  
Akira Sakakibara
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Fatigue Strength ◽  
Grain Boundary ◽  
Binary Alloy ◽  
Tensile Loading ◽  
Small Addition ◽  
Microstructure And Mechanical Property

In this study, we investigated the effects of a small addition of Cu (0.1%) or Ge (0.1%) on the microstructure and mechanical property of Al-Si alloys. The results are as follows. The size of precipitates in the Cu-added or Ge-added alloys is smaller than that in the binary alloy. The size of the precipitates at the grain boundary in the Cu-added or Ge-added alloys is larger than the size of the precipitates in the binary alloy. However, the number of the precipitates at the grain boundary in the Cu-added and Ge-added alloys is smaller than that in the binary alloy. It was found that a small addition of Cu or Ge has the effect of raising the fatigue strength under repeated tensile loading as well as the tensile strength.

Vacuum Brazing of Copper Tubes Using Ag-Cu Filler

2013 ◽  
Vol 690-693 ◽  
pp. 2664-2667
Author(s):  
Rui Feng Li ◽  
Zhong Xing Shi ◽  
Kai Qi ◽  
Ming Fang Wu
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Tensile Test ◽  
Base Metal ◽  
Optical Microscope ◽  
Test Machine ◽  
Vacuum Level ◽  
Vacuum Brazing ◽  
Brazed Joints ◽  
Microstructure And Mechanical Property

Joining of copper tubes using Ag-Cu filler has been carried out by vacuum brazing technology. The microstructure and mechanical property of brazed joints were studied by means of metallography, optical microscope (OM) and universal tensile test machine. Experimental results show that failure occurs in the base metal and the tensile strength can reach 179 MPa. The optimal vacuum brazing parameters are: brazing temperature 820 °C, vacuum level 10-3Pa and holding time 5 min.

The Effect of Pulse Current on Microstructure and Mechanical Property of the Pure Aluminum

2014 ◽  
Vol 703 ◽  
pp. 119-123
Author(s):  
Yao Li ◽  
Shu Hua Peng ◽  
Jun Jie Yang
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Grain Boundary ◽  
Current Density ◽  
Pulse Current ◽  
Pure Aluminum ◽  
Boundary Part ◽  
Dislocation Cells ◽  
Microstructure And Mechanical Property ◽  
Dislocation Walls

The tensile experiments were carried out under the condition of different pulse current on pure aluminum to analyze the effect of pulse current on the mechanical property such as tensile strength and elongation on material. The results show that pulse current could improve the mechanical properties and with pulse current the elongation of the aluminum increased to 19.5% and its tensile strength drops to some extent with the increase of electricity. At the same time, the dislocation structure features under different current density are also different. Without pulse current, dislocation is distributed as group unevenly. But when the current density J=8×102A/cm2, dislocation morphology changed into a mass of dislocation cells and moved to the grain boundary. Part of the cell walls formed grain boundary and then small angle subgrain formed. With the increase of current density, dislocation walls are arranged neatly and parallel to each other and at last single dislocation wall will be split into two or more parallel dislocation walls and form structure of striped band.

Microstructure and Mechanical Property of 22MnB5 High-Strength Steel

2013 ◽  
Vol 864-867 ◽  
pp. 644-647
Author(s):  
Ao Ran Wei ◽  
Hong Wei Liu ◽  
Jing Fan Chen
Keyword(s):  
Heat Treatment ◽  
Mechanical Property ◽  
Tensile Strength ◽  
High Strength Steel ◽  
Lath Martensite ◽  
High Strength ◽  
22Mnb5 Steel ◽  
Specific Elongation ◽  
Microstructure And Mechanical Property ◽  
Better Than

We have mental heat treatment for 22MnB5 steel with seven different experimental schemes and have mechanical property test on the seven steels. Then the microstructure and mechanical property of treated steels are studied, and the results show that 300°C is the optimum preservation temperature, at which we can get the optimum specific elongation of 22MnB5 steel. The tensile strength of steel thermal insulated at 300°C for 3 minutes is better than that of steel tempered at 300°C for 3 minutes, while as for specific elongation , the latter one is better. And we can also get homogeneous lath martensite after die quenching. The experiment lays foundations of the actual production process of hot forming.

Microstructure and Mechanical Property of an ECAP Processed Al-Mg2Si In Situ Composite by Using a Combined Route

2011 ◽  
Vol 194-196 ◽  
pp. 1720-1723 ◽  
Author(s):  
Li Ping Bian ◽  
Wei Liang ◽  
Wen Li Zhang
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Equal Channel Angular Pressing ◽  
Angular Pressing ◽  
Elongation To Failure ◽  
Microstructure And Mechanical Property ◽  
Al Matrix

Microstructure and mechanical property of a hypoeutectic Al-Mg2Si composite processed by equal channel angular pressing up to eight passes in a combined route 2A+4BA+2A were investigated. The results show that the initial developed eutectic Mg2Si was significantly refined into submicrometer-scale particles and distributed homogeneously in the Al matrix, which together with the refinement of Al matrix leads to a much higher ductility with the elongation to failure up to 24% and a significantly enhanced ultimate tensile strength of 284MPa in the processed composite, increased by 2300% and 70%, respectively, compared to those in its as-cast counterpart.

Effect of C on Microstructure and Mechanical Property of Hot Rolled DP Steel

2012 ◽  
Vol 557-559 ◽  
pp. 1387-1390
Author(s):  
Le Yu Zhou ◽  
Dan Zhang ◽  
Ya Zheng Liu ◽  
Long Jiao Li
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Volume Fraction ◽  
High Strength ◽  
Controlled Rolling ◽  
Elongation Ratio ◽  
Controlled Cooling ◽  
Dp Steel ◽  
Hot Rolled ◽  
Microstructure And Mechanical Property

Two kinds of C-Si-Mn-Cr-Mo-Nb tested steels with different C content were disigned, and controlled rolling and controlled cooling experiment of tested steels have been carried out in lab to analyze the effect of C on microstructure and mechanical property of high strength hot rolled dual phase steel. It is shown that two kinds of tested steels obtained ferrite and martensite microstructure under controlled rolling and step cooling process. With the increase of C content from 0.032wt% to 0.064wt%, ferrite grain size refines from 9.8μm to 5.0μm, width of martensite colony reduces from 10μm to 5.8μm, and martensite volume fraction increases from 11% to 25%. Yielding strength of high C tested steel is higher than that of low C steel by 55MPa, and amplification of tensile strength is about 155MPa. Elongation ratio decreases about 6.4%. Increasing of yielding strength is determined by strengthening of ferrite grain refining. The amplification of tensile strength is effect by volume fraction and refining of strengthening phase.

Microstructure and Mechanical Property of (Sn-9Zn0.05Ce)xBi Solder

2011 ◽  
Vol 189-193 ◽  
pp. 3326-3330 ◽  
Author(s):  
Chang Hua Du ◽  
Yi Luo ◽  
Jian Su ◽  
Li Meng Yin ◽  
Zhen Kang Li ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Tensile Strength ◽  
Turning Point ◽  
Rich Phase ◽  
Precipitated Phase ◽  
New Process ◽  
Microstructure And Mechanical Property

The (Sn-9Zn0.05Ce)xBi solders with different Bi contents were prepared by a new process. The characteristics of solders about microstructure, tensile strength, elongation and microhardness were studied. The results showed that addition Bi can induce acicular or granular Zn-rich precipitated phase in Sn-9Zn0.05Ce solder. To increasing Bi content caused more Zn-rich phase distributed disorderly. When the Bi content was added to 4%, the granular Bi precipitated phase was observable. The tensile strength and hardness of (Sn-9Zn0.05Ce)xBi solder will raise, but elongation descend significantly due to the Bi content increasing. It can be funded that there was a more obvious turning point as w(Bi)=2wt﹪.

Effect of milling on the microstructure and mechanical property of austenite stainless steel

2020 ◽  
Vol 62 (12) ◽  
pp. 1181-1186
Author(s):  
Huanchun Wu ◽  
Wenxin Ti ◽  
Guodong Zhang ◽  
Fei Xue ◽  
Chengtao Li ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Stainless Steel ◽  
Austenite Stainless Steel ◽  
Microstructure And Mechanical Property
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