Dependence of dynamic tensile strength and fracture toughness of Longyou sandstone on heat-treatment temperature and loading rate

2016 ◽  
pp. 215-220
Author(s):  
W Yao ◽  
K Xia
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Heat Treatment Temperature ◽  
Loading Rate ◽  
Treatment Temperature ◽  
Dynamic Tensile Strength ◽  
Longyou Sandstone

The effect of heat treatment temperature on the mechanical properties of copper M1.

2015 ◽  
Vol 2015 (3) ◽  
pp. 94-97
Author(s):  
Юлия Гусева ◽  
Yuliya Guseva ◽  
Владимир Сакало ◽  
Vladimir Sakalo ◽  
Татьяна Иншакова ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Heat Treatment Temperature ◽  
Tensile Tests ◽  
Treatment Temperature ◽  
Condi Tions ◽  
Solid Copper

Tensile tests of specimens made from solid copper M1 had been conducted. Samples were subjected to heat treatment by heating to temperatures of 200 to 900°C and were cooled in water or air. Values of tensile strength and relative residual elongation were defined. The condi-tions under which solid copper acquires the properties of soft copper installed.

scholarly journals Research on the influence of heat treatment temperature on bearing capacity of high steel grade pipeline during in-service welding

2021 ◽  
Vol 353 ◽  
pp. 01020
Author(s):  
Yan Xu ◽  
Yinglai Liu ◽  
Xianghui Nie ◽  
Zhenjun Feng ◽  
Liang Li ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Tensile Strength ◽  
High Temperature ◽  
Yield Strength ◽  
Bearing Capacity ◽  
Tensile Properties ◽  
Heat Treatment Temperature ◽  
Heating Temperature ◽  
Treatment Temperature ◽  
Steel Grade

During the welding of in-service pipeline, natural gas is continuously transported in the pipeline, which maintains a high gas pressure. Therefore, the welding process is completed under strong cooling conditions, and welding delay crack is easy to occur. Preheating before welding and heat treatment after welding can effectively control the hardened microstructure, reduce the residual stress and ensure the welding quality. In this study, the influence of heating temperature on the bearing capacity of high steel grade pipe during in-service welding repair was studied. The high temperature tensile test was used to simulate the bearing capacity of the pipe under heating and high temperature environment. It is found that when the heating temperature is below 400°C, the pipe strength remains at the original level. With the increase of heating temperature, when the test temperature is higher than 400°C, the yield strength and tensile strength of the pipe decrease significantly. When the test temperature is 450°C, the yield strength and tensile strength of the material decrease by 15.8% and 11.1%, respectively, compared with the normal temperature, which are lower than the pipe standard requirements. Therefore, it is suggested that when the heat treatment temperature is higher than 400°C during in-service welding repair, it is necessary to consider reducing the pipeline pressure. At the same time, the box furnace heat treatment method was adopted to heat treat the pipe, and the tensile properties of the pipe after heat treatment were tested to analyze the bearing capacity of the pipe after heat treatment. It is found that when the heating temperature is higher than 700°C, the tensile properties of high grade pipeline steel pipe decrease sharply. It is suggested that when the heat treatment temperature is higher than 700°C, the risk assessment of the service safety of the heat treated pipeline should be carried out.

Tensile Strength of Carbon–Carbon Composites: II – Effect of Heat Treatment Temperature

2004 ◽  
Vol 38 (19) ◽  
pp. 1685-1699 ◽  
Author(s):  
Hiroshi Hatta ◽  
Tatsuji Aoi ◽  
Itaru Kawahara ◽  
Yasuo Kogo
Keyword(s):  
Heat Treatment ◽  
Tensile Strength ◽  
Heat Treatment Temperature ◽  
Treatment Temperature ◽  
Carbon Composites

Squeeze Cast Co-Continuous AlN/Al Composites

2014 ◽  
Vol 788 ◽  
pp. 580-587
Author(s):  
Yuan Lu ◽  
Jing Long Li ◽  
Jian Feng Yang ◽  
Qiang Zheng Jing ◽  
Jing Jing Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Fracture Toughness ◽  
Flexural Strength ◽  
Vickers Hardness ◽  
Heat Treatment Temperature ◽  
Volume Fraction ◽  
Treatment Temperature ◽  
Al Content ◽  
Properties Of Composites

The co-continuous AlN composites with different Al contents were fabricated through the squeeze casting of porous AlN preform with varied porosities obtained by carbothermal reduction. The effects of volume fraction of Al phase and the heat treatment temperature on the mechanical properties of composites were investigated. The change of the mechanical properties of composites with the Al content was in line with the mixed rule. With an increase in the Al content, the fracture toughness increased, the Vickers hardness and the flexural strength decreased. The toughen mechanism of composites included ductile rupture and microcrack toughening. The avoiding of excessive interface reaction between AlN and Al was beneficial to the mechanical properties of composites. With an increase in the heat treatment temperature, the stress and the dislocation due to mismatch in the coefficients of thermal expansion increased, the fracture toughness decreased, the vickers hardness and the flexural strength increased.

VASCOMAX T-300

Alloy Digest ◽  
1990 ◽  
Vol 39 (12) ◽  
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
High Temperature ◽  
Heat Treating ◽  
Vacuum Arc ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Vacuum Arc Remelting ◽  
Temperature Performance

Abstract VASCOMAX T-300 is an 18% nickel maraging steel in which titanium is the primary strengthening agent. It develops a tensile strength of about 300,000 psi with simple heat treatment. The alloy is produced by Vacuum Induction Melting/Vacuum Arc Remelting. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-454. Producer or source: Teledyne Vasco.

Effects of Heat Treatment Temperature on Photocatalytic Activity of TiO2/SiO2 Composite Aerogels

2013 ◽  
Vol 27 (10) ◽  
pp. 1079-1083
Author(s):  
Zhao-Hui LIU ◽  
Gen-Liang HOU ◽  
Xun-Jia SU ◽  
Feng GUO ◽  
Zhou XIAO ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Photocatalytic Activity ◽  
Heat Treatment Temperature ◽  
Treatment Temperature ◽  
Composite Aerogels
Sign in / Sign up

Export Citation Format

Share Document