Low Cycle Fatigue of Sn-37Pb and Sn-3.5Ag Solders at Low Temperatures

Katoh, Akihisa; Hiyoshi, Noritake; Sakane, Masao; Tsukada, Yutaka; Nishimura, Hideo

doi:10.1299/jsmemecjo.2002.2.0_437

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“…Therefore, it is important to evaluate the strength of lead-free solders [5]. In addition, the standard sized bulk specimens have been used in previous studies [6][7][8][9], but there is a disadvantage to require a large amount of material in the process, leading to high experimental costs.…”

Section: Introductionmentioning

confidence: 99%

Low Cycle Fatigue Test of Lead Free Solders Using Small Sized Specimen

Konishi

Itoh

Sakane

et al. 2017

KEM

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This paper investigates the fatigue results in low cycle fatigue region obtained from a miniaturized specimen having a 6mm gage length, 3mm diameter and 55mm total length. Fatigue tests were performed for two type lead-free solders using horizontal-type electrical servo hydraulic push-pull fatigue testing machine. Materials employed were Sn-3.0Ag-0.5Cu and Sn-5Sb. The results from Sn-3.0Ag-0.5Cu were compared with those obtained using a bulk specimen in a previous study. Relationship between strain range and number of cycles to failure of the small-sized specimen agreed with those of the bulk specimens. The testing techniques are applicable to Sn-5Sb following the Manson-Coffin law. These results confirm that the testing technique proposed here, using small-sized specimen, is suitable to get fruitful fatigue data for lead-free solder compounds.

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