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Low Temperature Mechanical Properties of Ni68Cu28Fe( Monel 400) Alloy

The low temperature mechanical properties of Ni68Cu28Fe (Monel 400) alloys in different states are shown in Table 5-14, and the low temperature impact properties are shown in Table 5-15 and Table 5-16.
From the low-temperature impact performance data of the alloy, it is known that even in the liquid nitrogen and liquid helium temperatures, the impact properties of the alloy are not brittle fracture, and there is no plastic-brittle transition phenomenon.

Table 5-14 Low temperature mechanical properties of Ni68Cu28Fe( Monel 400) alloy

Test condition temperature / °C mechanical properties
Rm/MPa R0.2/MPa A/% Z/%
Cold drawn state Room temperature 715 645 19.0 71.0
-79 810 685 21. 8 70.2
Forged state Room temperature115 710 645 17.3 72.5
21. 1 635 460 31.0 72.7
-183 885 630 44.5 71. 8
~253 980 665 38.5 61.0
Annealed state 21. 1 540 215 51.5 75.0
-183 795 340 49.5 73.0
  • The test was held at -79 ° C for several hours before the test, and then tested at room temperature.
Table 5-15 Low Temperature Charpy Impact Performance of Ni68Cu28Fe( Monel 400) Alloy
Impact absorption
Status 24°C -30°C -80°C -190°C
Hot rolled state 297 一 289 266
Cold drawn annealed state 1            293 287 297 287
Weld state 106 — 一 99

 

Table 5-16 Low-temperature impact absorption work of hot rolled Ni68Cu28Fe( Monel 400) alloy plate
temperature / °C notch form direction impact absorption work / J
-252① V-shaped longitudinal 向 191 ~297
~252① V-shaped horizontal 向 164-298
~252① Keyhole shape longitudinal 向 110-118
~252① Keyhole shape horizontal 向 98 – 102
~262(2) V-shaped longitudinal 向 未断
~262^ V-shaped longitudinal 向 232 ~262
~262^ Keyhole shape longitudinal 向 167 – 198
-262② Keyhole shape longitudinal 向 123 – 157

 

The average of 5 tests in liquid hydrogen.
The average of 4 tests in liquid hydrogen.

 

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Post time: Mar-20-2019