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Title: Taming martensitic transformation via concentration modulation at nanoscale

Journal Article · · Acta Materialia
 [1];  [2];  [3];  [4];  [5]
  1. Xi'an Jiaotong Univ. (China). Center of Microstructure Science. Frontier Inst. of Science and Technology; Hong Kong Univ. of Science and Technology (China). Dept. of Mechanical Engineering
  2. The Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering
  3. Xi'an Jiaotong Univ. (China). Center of Microstructure Science. Frontier Inst. of Science and Technology
  4. Shanghai Univ. (China). Shanghai Univ. Materials Genome Inst. Shanghai Materials Genome Inst.
  5. Xi'an Jiaotong Univ. (China). Center of Microstructure Science. Frontier Inst. of Science and Technology; The Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering

Martensitic transformation (MT) is typically a strongly first-order transition with autocatalysis in nucleation followed by rapid growth. It usually takes place within a narrow temperature or stress range, making its utilization in a controllable manner difficult. We show by computer simulations how MTs can be tailored by concentration modulation at the nanoscale in the parent phase, which induces spatial variations of both the stability of martensite and the transformation strain and tunes the overall MT kinetics from a typical first-order transition into a high-order like continuous transition. Such a unique MT characteristic reduces or even eliminates the transformation hysteresis and produces quasi-linear elasticity with ultra-low apparent elastic modulus.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001258
OSTI ID:
1533471
Alternate ID(s):
OSTI ID: 1397799
Journal Information:
Acta Materialia, Vol. 130; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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