缺口對GH33A合金在復雜應力條件下力學行為的影響——高溫合金力學冶金(11)

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缺口對GH33A合金在復雜應力條件下力學行為的影響——高溫合金力學冶金(11)

房曉光, 梁晉, 謝錫善, 浦惠康

文章導航 > 工程科學學報 > 1988 > 10(4): 428-433

房曉光, 梁晉, 謝錫善, 浦惠康. 缺口對GH33A合金在復雜應力條件下力學行為的影響——高溫合金力學冶金(11)[J]. 工程科學學報, 1988, 10(4): 428-433. doi: 10.13374/j.issn1001-053x.1988.04.025

引用本文:

房曉光, 梁晉, 謝錫善, 浦惠康. 缺口對GH33A合金在復雜應力條件下力學行為的影響——高溫合金力學冶金(11)[J]. 工程科學學報, 1988, 10(4): 428-433. doi: 10.13374/j.issn1001-053x.1988.04.025

Fang Xiaoguang, Liang Jin, Xie Xishan, Pu Huikang. Notch Effect on Mechanical Behaviour of GH33A Superalloy under Complicated Stress Conditions[J]. Chinese Journal of Engineering, 1988, 10(4): 428-433. doi: 10.13374/j.issn1001-053x.1988.04.025

Citation:

Fang Xiaoguang, Liang Jin, Xie Xishan, Pu Huikang. Notch Effect on Mechanical Behaviour of GH33A Superalloy under Complicated Stress Conditions[J]. Chinese Journal of Engineering, 1988, 10(4): 428-433. doi: 10.13374/j.issn1001-053x.1988.04.025

房曉光, 梁晉, 謝錫善, 浦惠康. 缺口對GH33A合金在復雜應力條件下力學行為的影響——高溫合金力學冶金(11)[J]. 工程科學學報, 1988, 10(4): 428-433. doi: 10.13374/j.issn1001-053x.1988.04.025

引用本文:

房曉光, 梁晉, 謝錫善, 浦惠康. 缺口對GH33A合金在復雜應力條件下力學行為的影響——高溫合金力學冶金(11)[J]. 工程科學學報, 1988, 10(4): 428-433. doi: 10.13374/j.issn1001-053x.1988.04.025

Fang Xiaoguang, Liang Jin, Xie Xishan, Pu Huikang. Notch Effect on Mechanical Behaviour of GH33A Superalloy under Complicated Stress Conditions[J]. Chinese Journal of Engineering, 1988, 10(4): 428-433. doi: 10.13374/j.issn1001-053x.1988.04.025

Citation:

Fang Xiaoguang, Liang Jin, Xie Xishan, Pu Huikang. Notch Effect on Mechanical Behaviour of GH33A Superalloy under Complicated Stress Conditions[J]. Chinese Journal of Engineering, 1988, 10(4): 428-433. doi: 10.13374/j.issn1001-053x.1988.04.025

缺口對GH33A合金在復雜應力條件下力學行為的影響——高溫合金力學冶金(11)

doi: 10.13374/j.issn1001-053x.1988.04.025

1. 高溫合金教研室;
2. 上海第五鋼鐵廠

計量
- 文章訪問數: 258
- HTML全文瀏覽量: 89
- PDF下載量: 12
- 被引次數: 0
出版歷程
- 收稿日期: 1987-04-29
- 網絡出版日期: 2021-11-15

Notch Effect on Mechanical Behaviour of GH33A Superalloy under Complicated Stress Conditions

摘要: 本文研究了缺口對GH33A合金在高溫低周疲勞及勞疲/蠕變交互作用下的力學行為。結果表明:缺口使GH33A合金低周疲勞壽命縮短,其縮短的程度隨缺口尖銳程度的增加而加劇。低周疲勞高應力時,保載時間的作用引入了蠕變分量,促使低周疲勞壽命Nf降低。在低周疲勞固定最大應力,改變最小應力而造成蠕變/疲勞交互作用情況下,其斷裂壽命在一定條件下具有最大值,斷裂機制可由純疲勞斷裂逐步轉化為純蠕變斷裂,其程度主要決定于蠕變應力(或疲勞應力)分量所占比例的大小。
- 高溫合金 /
- 蠕變 /
- 交互作用 /
- 蠕變疲勞 /
- 缺口效應 /
- 低周疲勞
Abstract: The notch effect on high temperature LCF (Low Cycle Fatigue) and fatigue/creep interaction behaviour was investigated in GH33A super-alloy. LCF life was decreased dramatically because of notch and acuity of notchs. During LCF tests, dwelling at maximum stress introduces creep damage into low cycle fatigue, then decreased LCF fatigue cycles. At LCF tests with constant maximum stress and varied minimun stress, fatigue/creep interaction curve exhibits a maximum fatigue life at certain stress condition and fracture character can be gradually changed from pure fatigue into pure creep with increasing in mean stresses and decreasing in alternating stress amplitudes.
- superalloy /
- creep /
- interaction /
- creep fatigue /
- notch /
- low cycle fatigue

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文章訪問數: 258
HTML全文瀏覽量: 89
PDF下載量: 12
被引次數: 0

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