The Habit Plate Shift and the Morphology of ∝" Nitride Precipitate in ∝-Fe*

1982 ◽  
Vol 40 ◽  
pp. 728-729
Author(s):  
Y. C. Shih ◽  
J. W. Morris
Keyword(s):  
Surface Energy ◽  
Habit Plane ◽  
Elastic Strain ◽  
Strain Energy ◽  
Lattice Mismatch ◽  
Parent Phase ◽  
Elastic Strain Energy ◽  
Size And Shape ◽  
Linear Elastic ◽  
New Phase

A new phase which precipitates from a parent matrix has a size and shape which reflects its difference from parent phase. If the lattice mismatch is significant, the elastic strain energy is more important than the surface energy in determining the morphology and the preferred habit plane. The preferred habit of a tetragonal inclusion in a cubic matrix has been predicted by minimizing the elastic strain energy as from the Ktachaturyan linear elastic formula.

Stress Dependence of Microstructural Evolution in Heat Resistant Steels

2010 ◽  
Vol 654-656 ◽  
pp. 190-193
Author(s):  
Yoshinori Murata ◽  
Yoshihiro Saoto ◽  
Yuhki Tsukada ◽  
Toshiyuki Koyama ◽  
Masahiko Morinaga ◽  
...  
Keyword(s):  
Free Energy ◽  
Relaxation Time ◽  
Surface Energy ◽  
Elastic Strain ◽  
Strain Energy ◽  
Elastic Strain Energy ◽  
Stress Dependence ◽  
Heat Resistant ◽  
Chemical Free Energy ◽  
Heat Resistant Steels

The state of the microstructure of ferritic heat resistant steels during creep was evaluate by the system free energy, which composes mainly chemical free energy, surface energy and elastic strain energy, and its stress dependence was expressed quantitatively by using a relaxation time. The steels used in this study were P91 (9Cr-1Mo-C-N-V-Nb) steel and P92 (9Cr-Mo-W-C-N-V-Nb-B) steel. The obtained results are as follows: (1) the relaxation time of elastic strain energy was expressed as a function of stress and temperature, (2) surface energy of P92 scarcely decreased during creep due to the formation of the Laves phase, and (3) the relaxation time of the chemical free energy in P92 was larger than that in P91.

Influence of surface energy and elastic strain energy on the graphene growth in chemical vapor deposition

2019 ◽  
Vol 7 ◽  
pp. 776-783 ◽  
Author(s):  
Mohamad Shukri Sirat ◽  
Edhuan Ismail ◽  
Amir Hakimi Ramlan ◽  
Fatin Bazilah Fauzi ◽  
Iskandar Idris Yaacob ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Surface Energy ◽  
Vapor Deposition ◽  
Elastic Strain ◽  
Strain Energy ◽  
Elastic Strain Energy ◽  
Chemical Vapor ◽  
Graphene Growth

scholarly journals Discussions on the Complete Strain Energy Characteristics of Deep Granite and Assessment of Rockburst Tendency

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Lu Chen ◽  
Lijie Guo
Keyword(s):  
Time Delay ◽  
Elastic Strain ◽  
Strain Energy ◽  
Elastic Strain Energy ◽  
Confining Pressure ◽  
Strain Effect ◽  
Peak Strain ◽  
Rockburst Hazard ◽  
Linear Elastic ◽  
Loading And Unloading

In deep mining, the rockburst hazard has become a prominent problem. Rockburst is difficult to be predicted, and it gives a severe threat to mining safety. In this paper, the triaxial compressive tests with an acoustic emission (AE) device and full cyclic loading and unloading tests were carried out, respectively, to present characteristics of linear elastic strain energy and peak strain energy. Also, to consider the time-delay strain characteristics of granite found in the abovementioned tests, a new stage loading and unloading test with dual monitoring systems was designed and performed. Through 20 days’ time-delay strain monitoring, the peak-strength strain energy was further modified. The results showed that the peak strain energy is approximate 1.2-1.3 times than linear elastic strain energy under the same confining pressure, and after considering the time-delay strain effect, the modified maximal strain energy value of the deep granite significantly increased. The peak strain energy values are further enhanced from 1.0 × 104 J/m3 to 1.8 × 104 J/m3, respectively. At last, by taking advantage of the strain energy index model of rockburst, the tendency and intensity of rockburst were assessed contrastively.

EFFECT OF PRE-DEFORMATION ON DAMPING CAPACITY OF TINI/NBTI COMPOSITE

2010 ◽  
Vol 24 (15n16) ◽  
pp. 2392-2397 ◽  
Author(s):  
JIANG JIANG ◽  
LISHAN CUI ◽  
YANJUN ZHENG ◽  
TINGYONG XING ◽  
XINGQING ZHAO ◽  
...  
Keyword(s):  
Internal Friction ◽  
Elastic Strain ◽  
Strain Energy ◽  
Parent Phase ◽  
Elastic Strain Energy ◽  
Damping Capacity ◽  
Internal Friction Peak ◽  
Pinning Effect ◽  
Damping Behavior ◽  
Martensitic Variants

The present work aims to investigate the internal friction and effect of pre-deformation on damping capacity of Nb 60 Ti 25 Ni 15 alloy, which could be considered as TiNi / NbTi metal matrix composite. The internal friction results showed that this composite possesses excellent damping behavior, which is associated with the movement of a set of abundant interfaces, such as those between the TiNi and NbTi phases, those between martensitic variants and those between martensite and parent phase. Meanwhile, the peak temperature and the width of the internal peak increased with increasing of prestrain level. It appears to be due to the release of the stored elastic strain energy, or the pinning effect by the deformed structures. Furthermore, the height of internal friction peak decreased as the prestrain level increased.

An analytical model for the bending of radial nanowire heterostructures

2019 ◽  
Vol 21 (18) ◽  
pp. 9477-9482 ◽  
Author(s):  
Hang Zang ◽  
Huadong Chen ◽  
Xinlei Li ◽  
Yanping Zhao
Keyword(s):  
Surface Energy ◽  
Analytical Model ◽  
Elastic Strain ◽  
Strain Energy ◽  
Elastic Strain Energy ◽  
Heteroepitaxial Growth ◽  
Nanowire Heterostructures

The balance between surface energy and elastic strain energy determines the bending induced by heteroepitaxial growth on the surface of thin nanowires.

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