The welding characteristics of Fe–30Mn–6Si and Fe–30Mn–6Si–5Cr shape memory alloys

Lin, Hong‐Ping; Lin, K.M.; Chuang, Y.C.; Chou, T. S.

doi:10.1016/s0925-8388(00)00762-3

Cited by 25 publications

(14 citation statements)

References 15 publications

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“…Similar observations have been reported in previous work [1][2][3][4][5][6][7]. On the contrary, the drop in the shape memory effect of alloy sample 4 can be explained by its low strength, low c/a ratio and formation of ά martensite, which is considered to be detrimental for the shape memory behaviour of the alloys [8,9]. This improvement in shape memory effect can be presumably regarded as the effect of its high value of proof stress (Fig.…”

Section: Comparison Of Thermo-mechanical Behavioursupporting

confidence: 88%

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Comparative study on the effect of samarium additions on thermo-mechanical behaviour of shape memory alloys

Thomas

Dhandabani

Chandran³

2018

Matériaux & Techniques

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In the present work, a comparative study of the shape memory and thermo-mechanical behaviour of four alloys containing different amount of samarium have been carried out at a strain rate of 0.08 × 10-6s-1. After hot rolling, annealing and solution treatment, the alloy samples were tensile deformed at room temperature from 1% to 5% and were then recovered at 600 °C for 20 minutes repeatedly for six times to complete six training cycles. It is found that thermo-mechanical treatment (training) results in improvement of shape memory effect and has a significant influence on mechanical parameters like proof stress (σ: 0.002), critical stress (σ: 0.0008) and strain hardening exponent. The improvement in shape memory effect by thermo-mechanical treatment can be regarded as the effect of reduction in the values of proof stress and critical stress during training which facilitates the formation of ε (martensite). It has also been noticed that excessive training may result in the formation of ά (martensite) due to continuous softening of the alloy during training, thus degrading the shape memory effect. Finally, it has also been noticed that the addition of samarium increases the values of proof stress, critical stress and strain hardening exponent. Although the addition of samarium increases the values of proof stress, critical stress and strain hardening exponent yet it has not an adverse effect on shape memory effect. In this paper, the effect of thermo-mechanical treatment on mechanical parameters such as proof stress, critical stress, strain hardening exponent and their influence on shape memory effect is discussed.

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Section: Comparison Of Thermo-mechanical Behavioursupporting

confidence: 88%

“…Shape memory alloys are unique class of materials, which find their applications in a large variety of applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The extended interest of researchers in development of iron based shape memory alloys (Fe-Mn-Si-SMAs) is their elegant advantages [10,11,[15][16][17].…”

Section: Literature Reviewmentioning

confidence: 99%

Comparative study on the effect of samarium additions on thermo-mechanical behaviour of shape memory alloys

Thomas

Dhandabani

Chandran³

2018

Matériaux & Techniques

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show abstract

“…Due to ease of automation and flexibility, laser welding has gained its popularity in metal joining industry and has been considered to replace potentially some other popular joining processes such as resistance spot welding [17] and friction stir welding [18,19]. The promising possibility of the laser welding has prompted the manufacturers to use it for both ferrous [20,21] and nonferrous [22,23] alloys.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of laser welded dissimilar DP600/DP980 dual-phase steel joints

Farabi

Chen

Zhou

2011

Journal of Alloys and Compounds

170

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“…Since the discovery of the shape memory effect (SME) in Fe-Mn-Si alloys by Sato et al [1] in 1982, this new class of materials has attracted increasing attention due to its low production cost, excellent workability and good weldability in comparison to the traditional Ti-Ni and Cu-based shape memory alloys (SMAs) [2][3][4]. In the Fe-Mn-Si SMAs, the austenite (FCC structure) transforms into ε-martensite (HCP structure) during deformation ( → ε), and undergoes the reverse transformation into austenite upon heating (ε → ) to produce the SME.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of shape memory stainless steel in acid media

Rovere

Alano

Otubo³

et al. 2011

Journal of Alloys and Compounds

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The welding characteristics of Fe–30Mn–6Si and Fe–30Mn–6Si–5Cr shape memory alloys

Cited by 25 publications

References 15 publications

Comparative study on the effect of samarium additions on thermo-mechanical behaviour of shape memory alloys

Comparative study on the effect of samarium additions on thermo-mechanical behaviour of shape memory alloys

Microstructure and mechanical properties of laser welded dissimilar DP600/DP980 dual-phase steel joints

Corrosion behavior of shape memory stainless steel in acid media

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