Journal
SCRIPTA MATERIALIA
Volume 218, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2022.114831
Keywords
Compatibility; Microstructure evolution; Phase transformation; Cofactor conditions
Categories
Funding
- Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone Shenzhen Park Project [HZQB-KCZYB-2020030]
- Research Grants Council, Hong Kong [16201019, 16203021, C6016-20G-C]
Ask authors/readers for more resources
An experimental platform combining DSC with DInM was established, and experiments on an alloy were conducted to confirm the agreement between phase formation events observed by DInM and heat exchange profile characterized by DSC. Through quantitative analysis, it was discovered that there is a linear scaling law between twin evolution time and fineness.
We establish an experimental platform to combine the differential scanning calorimetry (DSC) with an in situ observation of microstructure by differential interference contrast microscope (DInM). We carry out the experiment on a phase-transforming alloy Au31Cu24Zn45 that closely satisfies the cofactor conditions -the strongest crystallographic compatibility constraints between phases. We confirm that the phase formation events observed by DInM agree well with the heat exchange profile characterized by DSC. We also observe different morphology of twins evolves differently, depending on the twin spacing. Through the quantitative analysis of various morphological domains in the temporal space, we discover that the scaling law between the twin evolution time and the fineness is linear, by which the characteristic transformation time for single variant martensite can be determined for this compatible martensite alloy as 0.636s.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
