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Title: Effect Of Ultra Shot Peening On Casting Shape Memory Alloy
Author: Y Watanabe, K Hattori, M Handa, Y Yoshimi, T Inaba
Source: Conf Proc: ICSP-10 Tokyo, Japan 2008
Publication year 2008
Document number: 2008033
Number of pages: 6
Abstract:
ABSTRACT
In order to overcome difficulties that have hindered precision casting of shape memory alloys, we made a ingots created with Self Propagating High Temperature Synthetic
Method (SHS) which eventually led us to the success of precision casting utilizing lost wax process. Also we have succeeded in creating functional products that are treated
with the ultrasonic shot peening process, improving the resiliency against deformation and fatigue strength. Although the common casting products are created using many
different kinds of metals and alloys, casting products utilizing shape memory alloys have not been widely adopted due to a lack of successfully produced products. The
reasons for this are that there was much difficulty in developing equal property structures that does not allow gravity segregation of Ni-Ti. Also its essential
characteristics (being the shape memory and super elasticity), the makeup of component had to overcome the structural weaknesses in order to withstand from
possible deformation.
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