Short-Time Elevated Temperature Mechanical Properties of 2219-T87 and 2219-T6 Aluminum Alloy

1967 ◽  
Vol 89 (1) ◽  
pp. 1-6 ◽  
Author(s):  
J. W. Montano
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Elevated Temperature ◽  
Ambient Temperature ◽  
Tensile Properties ◽  
Ambient Temperatures ◽  
2219 Aluminum Alloy ◽  
Increasing Temperature ◽  
Short Time

The mechanical properties of 2219-T87 and 2219-T6 aluminum were determined after soak times from 0 to 300 sec at temperatures from 300 deg F (149 deg C) to 600 deg F (316 deg C). Specimens were tested also at ambient temperatures after a soaking period of 300 sec at temperatures of 200 deg F (93 deg C) to 700 deg F (371 deg C). In general, the tensile strength of the 2219 aluminum alloy decreased with increasing temperature. The tensile properties were not significantly influenced by variations in the soak times used through 500 deg F (260 deg C). At 600 deg F (316 deg C), increasing the soak time affected the strength slightly. For relatively short time exposures, this material can be recommended for load-bearing applications to 400 deg F (204 deg C), at which temperature 70 percent of the ambient temperature strength is still retained. When tested at ambient temperature after exposure to 400 deg F (204 deg C) for 300 sec, 2219-T87 retained approximately 97 percent of its original ambient temperature strength.

An Evaluation of the Mechanical Properties of Mn-Mo and Mn-Mo-Ni Steels

1973 ◽  
Vol 95 (1) ◽  
pp. 235-242 ◽  
Author(s):  
R. A. Swift ◽  
J. A. Gulya
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elevated Temperature ◽  
Ultimate Tensile Strength ◽  
Tensile Properties ◽  
Creep Strength ◽  
Creep Ductility ◽  
Elevated Temperature Tensile ◽  
Ni Addition ◽  
Increasing Temperature

A study of the effects of normalizing and austenitizing on the mechanical properties of Mn-Mo and Mn-Mo-Ni steels is presented. It is shown that the quenched and tempered condition has superior notch toughness, elevated temperature tensile properties, and creep ductility than the normalized and tempered condition. The basis of comparison used for strength is the percentage of the room temperature strength. The creep strength and rupture resistance of the normalized and tempered condition are better than those of the quenched and tempered condition. Also, a comparison of the properties of the steels is made to evaluate the effects of a 0.5 percent Ni addition. While it improves hardenability, Ni tends to impair the elevated temperature creep strength and rupture resistance. Significant effects of Ni are seen on the elevated temperature tensile properties. The loss in ultimate tensile strength with increasing temperature is greater for the Ni modified grade than for the unmodified Mn-Mo. In the quenched and tempered condition, both yield strength and ultimate tensile strength are less affected by temperature when no Ni is added.

Elevated Temperature Mechanical Behavior of Mg-Y-Zn Alloys

2007 ◽  
Vol 546-549 ◽  
pp. 237-240 ◽  
Author(s):  
Bin Chen ◽  
Dong Liang Lin ◽  
Xiao Qin Zeng ◽  
Chen Lu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elevated Temperature ◽  
Ultimate Tensile Strength ◽  
Ambient Temperature ◽  
Mechanical Behavior ◽  
Gradual Increase ◽  
Yttrium Content ◽  
Zn Alloy ◽  
Zn Alloys

The elevated temperature mechanical behavior of Mg-Y-Zn alloys was investigated. It was found that the extruded Mg-Y-Zn alloy exhibited excellent mechanical properties both at ambient temperature and elevated temperature. With the increase of tensile temperature, the ultimate tensile strengths of Mg-Y-Zn alloys decreased and their elongations increased. The ultimate tensile strengths increased and elongations decreased with the increase of yttrium content. However, a gradual increase in the ultimate tensile strength and elongation both at ambient temperature and elevated temperature was obtained by increasing both yttrium and zinc contents. The fracture modes of Mg-Y-Zn alloys at different tensile temperature were also investigated.

Effect of Severe Plastic Deformation at Ambient Temperature on Microstructures and Mechanical Properties of Aluminum Alloy 2519

2013 ◽  
Vol 745-746 ◽  
pp. 298-302
Author(s):  
Ying Liu ◽  
Ruo Lin Cheng ◽  
Jing Tao Wang ◽  
He Zhang ◽  
Xin Ming Zhang
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Severe Plastic Deformation ◽  
Cold Rolling ◽  
Ambient Temperature ◽  
Hardness Test ◽  
Equal Channel Angular Processing ◽  
Microstructures And Mechanical Properties

The effect of severe plastic deformation at ambient temperature on microstructures and mechanical properties of aluminum alloy 2519 was investigated by means of tensile test, micro-hardness test, optical microscopy and scanning electron microscopy. The results showed that tensile strength of as-queched 2519 alloy was greatly enhanced to nearly 550MPa (ultimate tensile strength, UTS) and 520MPa (yield strength, YS) by severe cold rolling or equal channel angular processing (ECAP) while the elongation decreased to 5%. The 2519 alloy could obtain quite well mechanical properties as much as 80 % and 12 passes cold rolling deformation. This indicated that pre-deformation by ECAP is effective in improving the mechanical properties of 2519 alloy by grain refinement, strain aging and high density dislocations.

Effects of Different Sr Additions on As Cast Microstructure and Tensile Properties of AS31 Alloy

2014 ◽  
Vol 788 ◽  
pp. 110-114 ◽  
Author(s):  
Ji Xue Zhou ◽  
Dong Qing Zhao ◽  
Jin Wei Wang ◽  
Shou Qiu Tang ◽  
Wei Hong Li
Keyword(s):  
Grain Size ◽  
Tensile Strength ◽  
Elevated Temperature ◽  
Magnesium Alloy ◽  
Ambient Temperature ◽  
Tensile Properties ◽  
Mass Fraction ◽  
Chinese Script ◽  
Polyhedral Shape ◽  
Cast Microstructure

Effects of different Sr additions (0.1%-1%Sr, mass fraction) on as-cast microstructure and tensile properties both at ambient temperature and elevated temperature of AS31 magnesium alloy were studied. The experimental results show that the addition of Sr could refine the grain size obviously and modify the eutectic Mg2Si from Chinese script shape to polyhedral shape or fine fibers shape. The addition of Sr to AS31 alloy improved the tensile strength at ambient temperature, and the ultimate strength at 150°C first decrease and then increase with the Sr addition increase from 0.1% to 1%Sr.

Effects of Different Species of Sr Additives on as Cast Microstructure and Tensile Properties of AS31 Alloy

2015 ◽  
Vol 816 ◽  
pp. 465-469
Author(s):  
Ji Xue Zhou ◽  
Jin Wei Wang ◽  
Yi Zhang ◽  
Shou Qiu Tang ◽  
Wei Hong Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Ambient Temperature ◽  
Tensile Properties ◽  
Experimental Results ◽  
Cast Microstructure

Effects of different species of Sr additives (pure Sr, cast Mg-10Sr block, Ф10mm extruded Al-10Sr bar) on as-cast microstructure and tensile properties both at ambient temperature and elevated temperature of AS31 alloy were studied. The experimental results showed that pure Sr, Mg-10Sr, Al-10Sr additions all could refine the grains of AS31 alloy obviously, modify the eutectic Mg2Si particles and strengthen AS31 alloy. Al-10Sr is most effective to refine microstructure and improve mechanical properties of AS31 alloy.

Mechanical Properties of Mg-8Zn-4Al-xCa Extruded Magnesium Alloy Tube at Elevated Temperature

2007 ◽  
Vol 546-549 ◽  
pp. 305-310
Author(s):  
Bao Yi Yu ◽  
Yu Ying Li ◽  
Hong Wu Song ◽  
Xiao Guang Yuan ◽  
Zhen Liu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elevated Temperature ◽  
Magnesium Alloy ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Tensile Properties ◽  
Room Temperature ◽  
Alloy Tube ◽  
Tensile Performance

Microstructures and tensile properties of Mg-8Zn-4Al-xCax=0.6wt.%, 1.0wt.%, 1.3wt.%, named as alloy 1#, 2# and 3# , respectively)extruded magnesium alloy tube were studied at room and elevated temperature. The results show that Ca can increase tensile strength of the alloy at 150 and 200°C significantly. At the temperature of 200°C, alloy 3# achieved optimal tensile properties, of which the ultimate tensile strength, the yield strength and the elongation were 165.8MPa, 108.7Mpa and 41.5% respectively. Compared with the properties of as cast ZAC8506 Magnesium alloy, it is shown that the tensile properties of alloy 3# are much higher than that of ZAC8506 at both room temperature and 150°C. Alloy 3# also gets better tensile performance than AZ91D extruded tube produced in the same way at the temperature of 200°C Mg2Al3 and Ca2Mg5Zn13 phases are found in the microstructure which should contribute to the higher performance of alloy 3# at elevated temperature

The Effect of Temperature on the Tensile Properties of Steel 0Cr18Ni9

2010 ◽  
Vol 654-656 ◽  
pp. 194-197
Author(s):  
Wei Fen Li ◽  
Wei Niu ◽  
Zhi Ming Hao ◽  
Ming Hai Li
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Yield Strength ◽  
Tensile Properties ◽  
Tensile Testing ◽  
Testing Machine ◽  
Effect Of Temperature ◽  
Tensile Testing Machine ◽  
Increasing Temperature

Experiments of tensile mechanical properties of steel 0Cr18Ni9 are done on the MTS 810 tensile testing machine, and the temperature range is from 20°C to 1200°C. The stress vs. strain curves are obtained. Results show that the elastic modulus, yield stress and tensile strength decrease with increasing temperature .Based on the experiment results, the functions of the elastic modulus, yield strength and tensile strength versus temperature are represented by polynomial.

Effect of Extrusion on Mechanical Properties of Spray Forming 8009 Heat Resistant Aluminum Alloy

2014 ◽  
Vol 886 ◽  
pp. 32-35
Author(s):  
Rong Hua Zhang ◽  
Bao Hong Zhu ◽  
Xiao Ping Zheng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Yield Strength ◽  
Room Temperature ◽  
Extrusion Process ◽  
Spray Forming ◽  
Medium Temperature ◽  
Increasing Temperature ◽  
Scanning Electron

The 8009 aluminum alloys were fabricated by spray forming and extrusion process. The microstructure and properties of the alloy were investigated by means of metallographic, scanning electron microscope and tensile test. The results indicate that at room temperature, the tensile strength of the extruded alloys can reach 415MPa, the yield strength 345MPa, elongation 22.5%. The tensile strength and yield strength of the alloys decrease with the increasing temperature, the plastic of alloys shows a down-up medium temperature brittleness law.

scholarly journals Effect of Elevated Ambient Temperature on Simulator-Derived Oscillometric Blood Pressure Measurement

2020 ◽  
Author(s):  
Jennifer S Ringrose ◽  
Michael D Kennedy ◽  
Jalisa Kassam ◽  
Omar Mouhammed ◽  
Sangita Sridar ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Elevated Temperature ◽  
Ambient Temperature ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Blood Pressure Measurement ◽  
Ambient Temperatures ◽  
Oscillometric Blood Pressure Measurement ◽  
Increasing Temperature ◽  
Relative Differences

Abstract BACKGROUND Oscillometric blood pressure (BP) devices are typically labeled for use up to 40 °C. Many geographic regions have ambient temperatures exceeding 40 °C. We assessed the effect of increased ambient temperature (40–55 °C) on simulator-derived oscillometric BP measurement. METHODS Three Omron BP769CAN devices, 3 A&D Medical UA-651BLE devices, and accompanying cuffs were used. A custom heat chamber heated each device to the specified temperature. A noninvasive BP simulator was used to take 3 measurements with each device at differing temperatures (22, 40, 45, 50, and 55 °C) and BP thresholds: 80/50, 100/60, 120/80, 140/90, 160/110, and 180/130 mm Hg. Using each device as its own control (22 °C), we determined the relative differences in mean BP for each device at each temperature and BP setting, assessed graphical trends with increasing temperature, and examined variability. RESULTS Graphical trends of mean simulator-subtracted BP differences from room temperature showed no discernable pattern, with differences clustered around zero. Overall mean difference in BP (combined elevated temperatures minus room temperature) was −0.8 ± 2.1 (systolic ± SD)/1.2 ± 3.5 (diastolic ± SD) mm Hg for the A&D device and 0.2 ± 0.4 (systolic ± SD)/−0.1 ± 0.1 (diastolic ± SD) mm Hg for the Omron. All individual elevated temperature differences (elevated temperature minus room temperature) except A&D diastolic BP at 50 °C were within 5 mm Hg. CONCLUSIONS In this simulator-based study assessing within-device differences, higher ambient temperatures resulted in oscillometric BP measurements that were comparable to those performed at room temperature.

Analysis of Tensile Properties of N80Q Steel and 80SH Steel

2020 ◽  
Vol 993 ◽  
pp. 610-615
Author(s):  
Yang Chen ◽  
Hang Wang ◽  
Shang Yu Yang ◽  
Wen Lan Wei ◽  
She Ji Luo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Tensile Properties ◽  
Tensile Fracture ◽  
Service Environment ◽  
Radiation Zone ◽  
Increasing Temperature

During heavy oil production, the performance of casing varies with temperature in the service environment. The tensile test of N80Q Steel and 80SH Steel were carried out to evaluate the mechanical properties during the service. The results indicated that the grain size of 80SH steel was relatively uniform and the grain boundary was relatively obvious compared with N80Q steel. A qualitative analysis was performance by relating the tensile properties with different temperature. The results showed that the yield strength, the tensile strength and elongation of N80Q and 80SH steels decreased with increasing temperature, but the degree of decline was limited. The observation of the tensile fracture revealed that the characteristics of the radiation zone of N80Q steel were obvious compared with 80SH steel at 20°C.

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