The Boron Effect on Mechanical Properties of Aged 2024 Aluminum Alloy

2011 ◽  
Vol 339 ◽  
pp. 152-156
Author(s):  
Neda Khatami ◽  
Shamsoddin Mirdamadi ◽  
Hekmat Razavizadeh
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Aging Process ◽  
Precipitation Hardening ◽  
Natural Aging ◽  
2024 Aluminum Alloy ◽  
Pure Material ◽  
State Bearing ◽  
2024 Alloy ◽  
Element Addition

2024 Aluminum Alloy is widely used in aeronautical applications. The Alloy's strength is increased by Precipitation Hardening which is the aging and solution of strength and is widely used in T6 state. Bearing in mind the effect of Boron in shorting the aging time, the pure material of B2O3 was used in order to add Boron to 2024 Alloy, so Alloying was done. By testing mechanical properties and microstructure observations, good results were achieved in Boron effect on this alloy's quench in comparison with those alloys lacking Boron. The outcomes depicted that this element addition increases hardness and tensile strength in aging process. In a way that the hardness of the alloy after controlled quench in one hour natural aging was reached to 93HB from 73HB and to 134HB in one hour artificial aging in 110°C. Such difference in hardness amount is due to better distribution of precipitates.

Artificial Ageing Effect on Mechanical, Electrical Properties and Positron Lifetime of Aircraft 2024 Alloy

2012 ◽  
Vol 329 ◽  
pp. 63-68 ◽  
Author(s):  
Abdullah A. Refaey ◽  
M. A. Abdel-Rahman ◽  
Emad A. Badawi
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Electrical Properties ◽  
Positron Lifetime ◽  
Artificial Ageing ◽  
Ageing Effect ◽  
2024 Aluminum Alloy ◽  
2024 Alloy ◽  
Constant Rate ◽  
Specific Temperature

Heat Treatments for Different Aging Times Were Performed on 2024 Aluminum Alloy. the Effect on the Positron Lifetime, Electrical and Mechanical Properties of the 2024 (Al-Cu-Mg) Alloy Was Studied. Artificial Ageing Was Conducted by Heating at a Constant Rate to a Specific Temperature, Followed by Annealing. the Alloy Was Treated at 192°C for Various Times, Followed by Annealing. Measurements as a Function of Aging Time Were Found to Exhibit Prominent Changes Related to the Formation of Precipitates.

Study on the Formability of Aluminium Alloy Sheets at Room and Elevated Temperatures

2016 ◽  
Vol 877 ◽  
pp. 393-399
Author(s):  
Jia Zhou ◽  
Jun Ping Zhang ◽  
Ming Tu Ma
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Elevated Temperature ◽  
Aluminium Alloy ◽  
Aluminium Alloys ◽  
Elevated Temperatures ◽  
Hot Stamping ◽  
Natural Aging ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet

This paper presents the main achievements of a research project aimed at investigating the applicability of the hot stamping technology to non heat treatable aluminium alloys of the 5052 H32 and heat treatable aluminium alloys of the 6016 T4P after six months natural aging. The formability and mechanical properties of 5052 H32 and 6016 T4P aluminum alloy sheets after six months natural aging under different temperature conditions were studied, the processing characteristics and potential of the two aluminium alloy at room and elevated temperature were investigated. The results indicated that the 6016 aluminum alloy sheet exhibit better mechanical properties at room temperature. 5052 H32 aluminum alloy sheet shows better formability at elevated temperature, and it has higher potential to increase formability by raising the temperature.

Effect of Non-Conventional Aging Treatments on the Tensile Properties of Non-Hipped Castings of Aluminum Alloy 354

2014 ◽  
Vol 875-877 ◽  
pp. 1397-1405 ◽  
Author(s):  
G. Dinesh Babu ◽  
M. Nageswara Rao
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminum Alloy ◽  
Tensile Properties ◽  
Artificial Aging ◽  
Natural Aging ◽  
Single Step ◽  
Cast Aluminum Alloy ◽  
Cast Aluminum ◽  
Automobile Components

Cast aluminum alloy 354 is used extensively for production of critical automobile components, owing to its excellent castability and attractive combination of mechanical properties after heat-treatment. With the advent of higher performance engines, there has been a steady demand to further improve the mechanical behavior of the castings made of the alloy, among others, through improvements in processing. The present study explores the possibility of improving tensile properties of the alloy by adopting certain non-conventional aging treatments. The non-conventional treatments include aging cycles similar to T6I4 and T6I6 referred to in the published literature, artificial aging in two steps instead of in single step and artificial aging preceded by various natural aging times. The results show that none of these non-conventional treatments leads to improvement of all tensile properties compared to the standard T61 treatment. Significant hardening takes place in the alloy due to natural aging. Changing the time of natural aging preceding artificial aging was found to have little effect on tensile properties.

Natural Aging Behavior of Double-Sided MIG Welded A7N01-T5 Aluminum Alloy

2018 ◽  
Vol 941 ◽  
pp. 1155-1160
Author(s):  
Ying Li ◽  
Zhi Qiang Zhang ◽  
Jian Liu ◽  
Hua Yin ◽  
Chang Shu He
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Aging Process ◽  
Weld Zone ◽  
Natural Aging ◽  
Middle Layer ◽  
Age Hardening ◽  
Aging Behavior ◽  
Epma Analysis ◽  
Zn Content

A heat treatable A7N01 (Al-Zn-Mg) aluminum alloy mainly used to fabricate high-speed train body structures was double-sided welded by MIG welding. The natural aging behavior of the joint was systematically studied by local and global mechanical property testing method. Based on TEM observation and EPMA analysis, the key factors that lead to different natural aging behavior among various regions of the joint were discussed. The global tensile strength of the joints increased obviously after natural aging. All the joint samples fractured in the weld zone, which demonstrated the weld zone was the weakest zone of the joints. And the strength of the global welds were depended on the microstructure and natural aging ability of the weld zone. Moreover, the increase of the tensile property of the three local regions in the weld zone after post natural aging decreased as Middle>lower>upper. The above phenomenon was also further confirmed by microhardness measurement. The age hardening behavior is greatly influenced by the concentration of strengthening precipitates forming element Zn. The Zn content in the weld zone determined by EPMA showed that element Zn was dispersed unevenly, which is attributed to the double V-groove design used in this work and Zn vaporization in the molten pool during welding. The Zn content in the middle layer metals is higher than that of the upper and lower layers, resulting in the remarkable hardening response for the middle layer of the weld zone during natural aging process. Additionally, the solution zone containing the same Zn content as the base metal and undergoing sufficient solid solution during welding was found to possess the high hardening ability after natural aging process.

Study on Two-Step Aging Technology of 6082 Aluminum Bumper

2018 ◽  
Vol 764 ◽  
pp. 245-251
Author(s):  
Bei Ming Zhao ◽  
Miao Hu ◽  
Jun Zhu ◽  
Zhen Yu Han ◽  
Hou Qing Sun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Process Parameters ◽  
Aging Temperature ◽  
Aging Process ◽  
Production Efficiency ◽  
Holding Time ◽  
Second Stage ◽  
Main Factors ◽  
6082 Aluminum Alloy

The influence of four parameters of two-step aging on the mechanical properties of 6082 aluminum alloy bumper was studied by orthogonal test. The results show that compared with the single stage aging, the two-step aging process can reduce the aging time and improve the production efficiency under the premise of the mechanical properties of the bumper meet the requirements. Among the four aging process parameters, the second stage aging temperature and holding time are the main factors that affect the final results, while the first stage aging temperature and holding time are secondary factors. The most suitable aging process parameters for the 6082 aluminum alloy bumper is (150 °C, 2 h) + (190 °C, 2.5 h). After two-step aging, the grain of the aluminum bumper is small and evenly distributed, leading to good mechanical properties. The generalized experiment shows that the application of the two-step aging process still has some limitations and needs to be further optimized and perfected.

Effect of Ageing Process on Mechanical Properties of Martensite Precipitation-Hardening Stainless Steel

2010 ◽  
Vol 146-147 ◽  
pp. 382-385 ◽  
Author(s):  
Song Xiang ◽  
Jiang Ping Wang ◽  
Yu Ling Sun ◽  
Yong You Yan ◽  
Shi Gang Huang
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Brittle Fracture ◽  
Fracture Mode ◽  
Aging Temperature ◽  
Aging Process ◽  
Precipitation Hardening ◽  
Ageing Process ◽  
Tempered Martensite ◽  
Effects Of Aging

17-4PH precipitation-hardening martensite stainless steel is an important commercially available stainless steel. And the mechanical properties of this steel are very sensitive to quenching and aging process. In this paper, the effects of aging process on mechanical properties of this steel were investigated. The results show that the microstructure of this steel consists of quenched martensite, tempered martensite and precipitates. With the increase of the aging temperature, the strength decreases and the toughness increase. And the fracture mode of this steel transforms brittle fracture into toughness fracture.

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