Zn-Al Alloy Having Excellent High-Speed Deformation Properties and Process For Producing the Same

a technology of al alloy and high-speed deformation, which is applied in the field of zn-al alloy, can solve the problems of reducing energy absorption capacity, deteriorating vibration-proof rubber, and unsuitable for use, and achieves excellent static deformation
US20080196796A1Inactive Publication Date: 2008-08-21KOBE STEEL LTD
1 Cites 4 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
KOBE STEEL LTD
Publication Date
2008-08-21
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A Zn—Al alloy excellent in static deformability as well as dynamic deformability and applicable to large-sized structures, and a method for production thereof. The alloy contains 30-99% Zn, with the remainder being Al and inevitable impurities, and has a metallographic structure in which the α phase or α′ phase having an average grain size no larger than 5 μm contains the β phase finely dispersed therein, the Al inclusions have a maximum equivalent circle diameter no larger than 50 μm and are free of pores no smaller than 0.5 mm in terms of equivalent circle diameter, and the macrosegregation of Al is less than 3.0% and the microsegregation of Al is less than 2.0%. (% means mass %.)
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present invention relates to a Zn—Al alloy and a method for production thereof. More particularly, the present invention relates to a Zn—Al alloy which exhibits excellent deforming capability when it experiences rapidly applied stresses, and also to a method for production thereof. The Zn—Al alloy disclosed herein is useful for the seismic isolator or damper which permits any building to follow its vibration and strain caused by winds and earthquakes.BACKGROUND ART

[0002] There have been contrived several seismic isolators or dampers which absorb or follow strains due to winds or earthquakes. They include lead dampers, vibration proof rubber, oil dampers, and vibration controlling steel sheets, for example, LYP (extra low yield point steel). Unfortunately, the vibration proof rubber, which deteriorates with time, is not suitable for use as the seismic isolator or damper of buildings which are required to have long-term durability. Oil dampers, which need perio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More