FAILURE ANALYSIS OF HIGH STRENGTH ALUMINUM ALLOY WHEEL
The mechanism of cracks initiation and propagation of high strength aluminum alloy rims for heavy vehicles were analyzed. Tensile testing machine,optical microscopy,scanning electronic microscope and energy disperse spectrometer detailed characterization of the mechanical properties,fracture morphol...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2018-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.01.010 |
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| author | YU JianMin ZHANG ZhiMin WANG Qiang |
| author_facet | YU JianMin ZHANG ZhiMin WANG Qiang |
| author_sort | YU JianMin |
| collection | DOAJ |
| description | The mechanism of cracks initiation and propagation of high strength aluminum alloy rims for heavy vehicles were analyzed. Tensile testing machine,optical microscopy,scanning electronic microscope and energy disperse spectrometer detailed characterization of the mechanical properties,fracture morphology,crack characteristics and corrosion products of aluminum alloy wheel respectively. The results show that the crack is look like the shape"Z",expanding along the grain boundary and fracture;there are corrosive elements Cl and S at the crack initiation zone and crack extension area,with characteristics of typical stress corrosion. According to the actual assembly and service condition,it exist electric potential difference between aluminum alloy wheel and steel lock ring under the condition of corrosive medium,which will generate galvanic corrosion. After T6 heat treatment,there areηphase,S phase and θ phase on the grain boundary of 7 A04 aluminum alloy. In the corrosion environment,the matrix grain priority to dissolute itself as anodic,which makes the grain boundary become active path,crack propagation along the path lead to fracture. |
| format | Article |
| id | doaj-art-26da17d3f3df42ad86638a5a55ef9450 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2018-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-26da17d3f3df42ad86638a5a55ef94502025-01-15T02:32:53ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692018-01-0140556030600857FAILURE ANALYSIS OF HIGH STRENGTH ALUMINUM ALLOY WHEELYU JianMinZHANG ZhiMinWANG QiangThe mechanism of cracks initiation and propagation of high strength aluminum alloy rims for heavy vehicles were analyzed. Tensile testing machine,optical microscopy,scanning electronic microscope and energy disperse spectrometer detailed characterization of the mechanical properties,fracture morphology,crack characteristics and corrosion products of aluminum alloy wheel respectively. The results show that the crack is look like the shape"Z",expanding along the grain boundary and fracture;there are corrosive elements Cl and S at the crack initiation zone and crack extension area,with characteristics of typical stress corrosion. According to the actual assembly and service condition,it exist electric potential difference between aluminum alloy wheel and steel lock ring under the condition of corrosive medium,which will generate galvanic corrosion. After T6 heat treatment,there areηphase,S phase and θ phase on the grain boundary of 7 A04 aluminum alloy. In the corrosion environment,the matrix grain priority to dissolute itself as anodic,which makes the grain boundary become active path,crack propagation along the path lead to fracture.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.01.010High strength aluminum alloy wheelStress corrosionIntergranular fractureFailure |
| spellingShingle | YU JianMin ZHANG ZhiMin WANG Qiang FAILURE ANALYSIS OF HIGH STRENGTH ALUMINUM ALLOY WHEEL Jixie qiangdu High strength aluminum alloy wheel Stress corrosion Intergranular fracture Failure |
| title | FAILURE ANALYSIS OF HIGH STRENGTH ALUMINUM ALLOY WHEEL |
| title_full | FAILURE ANALYSIS OF HIGH STRENGTH ALUMINUM ALLOY WHEEL |
| title_fullStr | FAILURE ANALYSIS OF HIGH STRENGTH ALUMINUM ALLOY WHEEL |
| title_full_unstemmed | FAILURE ANALYSIS OF HIGH STRENGTH ALUMINUM ALLOY WHEEL |
| title_short | FAILURE ANALYSIS OF HIGH STRENGTH ALUMINUM ALLOY WHEEL |
| title_sort | failure analysis of high strength aluminum alloy wheel |
| topic | High strength aluminum alloy wheel Stress corrosion Intergranular fracture Failure |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.01.010 |
| work_keys_str_mv | AT yujianmin failureanalysisofhighstrengthaluminumalloywheel AT zhangzhimin failureanalysisofhighstrengthaluminumalloywheel AT wangqiang failureanalysisofhighstrengthaluminumalloywheel |