The enhanced range of temperature for coefficient of low thermal expansion, electrical and thermal conductivities of Cu substituted Fe–Ni invar alloys

2016 ◽  
Vol 91 (3) ◽  
pp. 035701 ◽  
Author(s):  
S A Khan ◽  
A B Ziya ◽  
A Ibrahim ◽  
S Atiq ◽  
N Ahmad ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Invar Alloys ◽  
Low Thermal Expansion ◽  
Thermal Conductivities

Studies of Microdefects, Thermal Expansion and Magnetic Properties of Fe-Ni-Co Invar Alloys

2017 ◽  
Vol 373 ◽  
pp. 146-149
Author(s):  
Wen Deng ◽  
Li Xia Li ◽  
Shou Lei Xu ◽  
Wen Chun Zhang ◽  
Yu Yang Huang ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Large Change ◽  
X Ray Diffraction ◽  
X Ray ◽  
Thermal Expansion Coefficients ◽  
Invar Alloys ◽  
Low Thermal Expansion ◽  
Expansion Coefficients ◽  
Fcc Phase ◽  
Bcc Phase

The microdefects, the thermal expansion coefficients and the magnetization -temperature curves of the Fe64Ni36-xCox (x=1~10) were characterized by means of positron lifetime, X-ray diffraction, Michelson's interferometer and VSM modular on PPMS, respectively. The Fe64Ni30Co6 alloy is a mixture of BCC and FCC structures. With the Co content increasing in Fe64Ni36-xCox alloys, the BCC phase increases, while the FCC phase decreases. In comparison with other Fe64Ni36-xCox alloys, the Fe64Ni31Co5 alloy has a rather high magnetization at temperature lower than Tc, a relatively large change of the magnetization with the temperature near Tc, and a rather low thermal expansion coefficient.

scholarly journals Strengthening of the Fe-Ni Invar Alloy Through Chromium

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1297 ◽  
Author(s):  
Qingshuang Sui ◽  
Jun He ◽  
Xin Zhang ◽  
Zhonghua Sun ◽  
Yunfei Zhang ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Mechanical Strength ◽  
Aging Time ◽  
Power Transmission ◽  
Coefficient Of Thermal Expansion ◽  
High Strength ◽  
Invar Alloy ◽  
Invar Alloys ◽  
Low Thermal Expansion ◽  
Cost Efficient

Invar alloys with both high strength and low thermal expansion are urgently needed in fields such as overhead power transmission, aero-molds, and so on. In this paper, Cr was introduced as a cost-efficient alloying element into the Fe-36Ni binary invar alloy to increase its mechanical strength. Our results confirmed that fine Cr7C3 precipitants, together with some Fe3C, in the invar alloy aged at 425 °C could be obtained with a short aging time. Those precipitants then grew and aggregated at grain or sub-grain boundaries with an increase in aging time. Simultaneously, mechanical strength and coefficient of thermal expansion (CTE) parabolically varied with the increase in aging time. The sample aged at 425 °C for 7 h presented a maximum strength of 644.4 MPa, together with a minimum coefficient of thermal expansion of 3.30 × 10−6 K−1 in the temperature range of 20–100 °C. This optimized result should be primarily attributed to the precipitation of the nanoscaled Cr7C3.

Synthesis of low thermal expansion ceramics based on CaZr4(PO4)6–Li2O system

2001 ◽  
Vol 79 (1) ◽  
pp. 6-10 ◽  
Author(s):  
Chong S. Yoon ◽  
Jae H. Kim ◽  
Chang K. Kim ◽  
K.S. Hong
Keyword(s):  
Thermal Expansion ◽  
Low Thermal Expansion

Material and application study for low thermal expansion glass-ceramic CLEARCERAM series

2005 ◽  
Author(s):  
Kousuke Nakajima ◽  
Toshihide Nakajima ◽  
Nobuo Kawasaki ◽  
Yoshiyuki Owari
Keyword(s):  
Thermal Expansion ◽  
Glass Ceramic ◽  
Application Study ◽  
Low Thermal Expansion

scholarly journals Isotropic Low Thermal Expansion over a Wide Temperature Range in Ti1–xZrxF3+x (0.1 ≤ x ≤ 0.5) Solid Solutions

2018 ◽  
Vol 57 (22) ◽  
pp. 14396-14400 ◽  
Author(s):  
Cheng Yang ◽  
Yugang Zhang ◽  
Jianming Bai ◽  
Peng Tong ◽  
Jianchao Lin ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Solid Solutions ◽  
Wide Temperature Range ◽  
Temperature Range ◽  
Low Thermal Expansion

scholarly journals Effects of Electrolyte Composition and Additives on the Formation of Invar Fe-Ni Alloys with Low Thermal Expansion Electrodeposited from Sulfate Bath

2018 ◽  
Vol 104 (10) ◽  
pp. 585-593 ◽  
Author(s):  
Yuki Kashiwa ◽  
Nobuaki Nagano ◽  
Tomio Takasu ◽  
Shigeo Kobayashi ◽  
Keisuke Fukuda ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Electrolyte Composition ◽  
Ni Alloys ◽  
Low Thermal Expansion ◽  
Sulfate Bath
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