Stress-Rupture of Metals Under Increasing Stress

1965 ◽  
Vol 87 (4) ◽  
pp. 875-878 ◽  
Author(s):  
G. H. Rowe ◽  
H. R. Meck
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Rupture Life ◽  
Stress Rupture ◽  
Hastelloy X ◽  
316 Stainless Steel ◽  
High Temperature Alloys

The prediction of rupture life of several high temperature alloys (Hastelloy X, Type 316 stainless steel, Cb-1 Zr) was investigated analytically and experimentally for the case of linearly increasing stress.

High Temperature Rupture Life of Nickel-Based Superalloy under Directional Solidification with High Temperature Gradient

2017 ◽  
Vol 898 ◽  
pp. 422-429 ◽  
Author(s):  
Wei Guo Zhang ◽  
Zhi Jie Liu ◽  
Song Ke Feng ◽  
Fu Zeng Yang ◽  
Lin Liu
Keyword(s):  
High Temperature ◽  
Temperature Gradient ◽  
Directional Solidification ◽  
Temperature Stress ◽  
Solidification Rate ◽  
Rupture Life ◽  
Stress Rupture ◽  
High Temperature Stress ◽  
Stress Rupture Life ◽  
Nickel Based Superalloy

The stress rupture life of DZ125 nickel-based superalloy that was prepared by directional solidification process under the temperature gradient of 500 K/cm has been studied at 900°C and 235MPa. The results showed that with the increase of directional solidification rate from 50 μm/s to 800 μm/s, the primary dendrite arm spacing reduced from 94 μm to 35.8 μm and γ' precipitates reduced and more uniformed in size. The high temperature stress rupture life of as-cast sample increased firstly and then decreased and reached its maximum at the solidification rate of 500 μm/s. The dislocation configuration of sample with refine dendritic structure after stress rupture was investigated and discovered that the dislocations in different parts of sample had different morphology and density, which indicated that the deformation of as-cast samples were uneven during high temperature stress rupture. A lot of dislocations intertwined around carbides and at the interface of γ/γ', and the dislocation networks were destroyed and the dislocations entered γ' precipitate by the way of cutting.

scholarly journals High Temperature Plastic Instability and Dynamic Strain Aging in the Tensile Behavior of AISI 316 Stainless Steel

2017 ◽  
Vol 20 (suppl 2) ◽  
pp. 506-511 ◽  
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Verônica Scarpini Candido ◽  
André Ben-Hur da Silva Figueiredo
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Plastic Instability ◽  
Tensile Behavior ◽  
Dynamic Strain ◽  
316 Stainless Steel ◽  
Aisi 316 Stainless Steel ◽  
Aisi 316

Improvement of Stress-rupture Life for Modified-HR6W Austenitic Stainless Steel

2011 ◽  
Vol 27 (11) ◽  
pp. 1059-1064 ◽  
Author(s):  
Shiyun Cui ◽  
Zixing Zhang ◽  
Yulai Xu ◽  
Jun Li ◽  
Xueshan Xiao ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Rupture Life ◽  
Stress Rupture ◽  
Stress Rupture Life

Assessment of an Improved Multiaxial Strength Theory Based on Creep-Rupture Data for Type 316 Stainless Steel

1993 ◽  
Vol 115 (2) ◽  
pp. 177-184 ◽  
Author(s):  
R. L. Huddleston
Keyword(s):  
Stainless Steel ◽  
Stress Tensor ◽  
Rupture Life ◽  
Deviatoric Stress ◽  
Biaxial Stress ◽  
304 Stainless Steel ◽  
Strength Theory ◽  
Stress Rupture Life ◽  
316 Stainless Steel ◽  
Stress States

A new multiaxial strength theory incorporating three independent stress parameters was developed and reported by the author in 1984. It was formally incorporated into ASME Code Case N47-29 in 1990. In the earlier paper, the new model was shown to provide significantly more accurate stress-rupture life predictions than the classical theories of von Mises, Tresca, and Rankine, for type 304 stainless steel tested at 593°C under different biaxial stress states. Further assessments for other alloys are showing similar results. The current paper provides additional results for type 316 stainless steel specimens tested at 600°C under tension-tension and tension-compression stress states and shows 2–3 orders of magnitude reduction in the scatter in predicted versus observed lives. A key feature of the new theory, which incorporates the maximum deviatoric stress, the first invariant of the stress tensor, and the second invariant of the deviatoric stress tensor, is its ability to distinguish between life under tensile versus compressive stress states.

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