EP0495121A1
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EP
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High strength damping alloy
Assignee: JFE Engineering Corp
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Filing: 1991-08-02
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Granted: —
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Expires: 2011-08-02
Abstract
Abstract A damping alloy with an outstanding vibration damping performance, capable of effectively decreasing occurrences of vibrations and noises in a structure, a machine and the like through the use of the alloy as components of the structure, the machine and the like. The damping alloy contains more than 0.50 wt% Si with Al and Si of within wt% ranges surrounded by respective points shown in Figs. 1 through 5, 0.1 wt% to (%Al + %Si) Mn, and the balance consisting of Fe and inevitable impurities. Furthermore, preferably, the alloy contains less than 0.01 wt% C, N, O, P and S, respectively.
Inventors
- 👤 Takayuki Nkk Corporation Ohdake
- 👤 Toshimichi Nkk Corporation Ohmori
- 👤 Toshihiro Nkk Corporation Takamura
- 👤 Takemi Nkk Corporation Yamada
- 👤 Tetsuya Nkk Corporation Sanpei
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 20:32
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A vibration-damping alloy of high strength containing more than 0.50 wt.% Si, those proportions of Al and Si which fall within the range defined in Figure 1 by the lines connecting points A₄(Al: 7.05 wt.%: Si: 0.95 wt.%), B₄(Al: 6.5 wt.%; Si: 1.10 wt.%), C₄ (Al: 4.70 wt.%; Si: 2.75 wt.%), D₄(Al: 2.25 wt.%; Si: 2.45 wt.%), E₄(Al: 1.00 wt.%; Si: 3.60 wt.%), F₄ (Al: 1.00 wt.%; Si: more than 0.50 wt.%) and G₄(Al: 7.50 wt.%; Si: more than 0.50 wt.%), and that proportion of Mn which ranges from 0.1 wt.% to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.
Claim 2
Dependent Claim
99 words
A vibration-damping alloy of high strength containing more than 0.50 wt.% Si, those proportions of Al and Si which fall within the range defined in Figure 2 by the lines connecting points A₆(Al: 7.45 wt.%; Si: 0.55 wt.%), B₆ (Al: 3.30 wt.%; Si: 1.50 wt.%), C₆ (Al: 1.00 wt.%; Si: 2.75 wt.%), D₆(Al: 1.00 wt.%; Si: more than 0.50 wt.%) and E₆(Al: 7.50 wt.%; Si: more than 0.50 wt.%), and that proportion of Mn which ranges from 0.1 wt.% to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.
Claim 3
Dependent Claim
105 words
A vibration-damping alloy of high strength containing more than 0.50 wt.% Si, those proportions of Al and Si which fall within the range defined in Figure 3 by the lines connecting points A₈(Al: 5.35 wt.%: Si: more than 0.50 wt.%), B₈(Al: 5.35 wt.%; Si: 0.80 wt.%), C₈ (Al: 3.30 wt.%; Si: 1.00 wt.%), D₈ (Al: 2.30 wt.%; Si: 1.40 wt.%), E₈(Al: 1.00 wt.%; Si: 2.35 wt.%) and F₈(Al: 1.00 wt.%; Si: more than 0.50 wt.%), and that proportion of Mn which ranges from 0.1 wt.% to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.
Claim 4
Dependent Claim
103 words
A vibration-damping alloy of high strength containing more than 0.50 wt.% Si, those proportions of Al and Si which fall within the range defined in Figure 4 by the lines connecting points A₁₀(Al: 4.60 wt.%; Si: more than 0.50 wt.%), B₁₀(Al: 4.60 wt.%; Si: 0.70 wt.%), C₁₀(Al: 3.20 wt.%; Si: 0.90 wt.%), D₁₀(Al: 2.55 wt.%; Si: 1.15 wt.%), E₁₀(Al: 1.00 wt.%; Si: 2.15 wt.%) and F₁₀(Al: 1.00 wt.%; Si: more than 0.50 wt.%), and that proportion of Mn which ranges from 0.1 wt.% to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.
Claim 5
Dependent Claim
103 words
A vibration-damping alloy of high strength containing more than 0.50 wt.% Si, those proportions of Al and Si which fall within the range defined in Figure 5 by the lines connecting points A₁₂(Al: 4.00 wt.%; Si: more than 0.50 wt.%), B₁₂(Al: 4.00 wt.%; Si: 0.70 wt.%), C₁₂(Al: 2.40 wt.%; Si: 0.95 wt.%), D₁₂(Al: 1.00 wt.%; Si: 1.90 wt.%), E₁₂(Al: 1.00 wt.%; Si: 1.30 wt.%) and F₁₂(Al: 2.05 wt.%; Si: more than 0.50 wt.%), and that proportion of Mn which ranges from 0.1 wt.% to the sum of said proportions of Al and Si, the balance of its composition being Fe and unavoidable impurities.
Claim 6
Dependent Claim
52 words
A vibration-damping alloy of high strength as set forth in claim 1, 2, 3, 4 or 5, wherein said impurities include not more than 0.01 wt.% C, not more than 0.01 wt.% N, not more than 0.01 wt.% O, not more than 0.01 wt.% P and not more than 0.01 wt.% S.
References Cited (Backward Citations)
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